tools: enable more remark-lint rules

New rules:
 1. rule-style
 2. strong-marker
 3. no-shell-dollars
 4. no-inline-padding
 5. code-block-style
 6. no-multiple-toplevel-headings

Fixes to the existing files applied.

PR-URL: https://github.com/nodejs/node/pull/8708
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ilkka Myller <ilkka.myller@nodefield.com>
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: James M Snell <jasnell@gmail.com>

6 files changed, 17 insertions, 15 deletions

diff --git a/doc/api/addons.md b/doc/api/addons.md
index a239e15de6..1dfdf8e3bb 100644
--- a/doc/api/addons.md
+++ b/doc/api/addons.md
@@ -243,7 +243,7 @@ filename to the `sources` array. For example:
 Once the `binding.gyp` file is ready, the example Addons can be configured and
 built using `node-gyp`:
 
-```sh
+```console
 $ node-gyp configure build
 ```
 
diff --git a/doc/api/debugger.md b/doc/api/debugger.md
index acffe65cba..dfe2f90973 100644
--- a/doc/api/debugger.md
+++ b/doc/api/debugger.md
@@ -181,7 +181,7 @@ localhost:5858
 
 ## V8 Inspector Integration for Node.js
 
-__NOTE: This is an experimental feature.__
+**NOTE: This is an experimental feature.**
 
 V8 Inspector integration allows attaching Chrome DevTools to Node.js
 instances for debugging and profiling.
diff --git a/doc/api/dns.md b/doc/api/dns.md
index 5d5354c3ef..95592f9cc3 100644
--- a/doc/api/dns.md
+++ b/doc/api/dns.md
@@ -6,9 +6,9 @@ The `dns` module contains functions belonging to two different categories:
 
 1) Functions that use the underlying operating system facilities to perform
 name resolution, and that do not necessarily perform any network communication.
-This category contains only one function: [`dns.lookup()`][]. __Developers
+This category contains only one function: [`dns.lookup()`][]. **Developers
 looking to perform name resolution in the same way that other applications on
-the same operating system behave should use [`dns.lookup()`][].__
+the same operating system behave should use [`dns.lookup()`][].**
 
 For example, looking up `nodejs.org`.
 
diff --git a/doc/api/net.md b/doc/api/net.md
index 491e74fc61..f1b206308c 100644
--- a/doc/api/net.md
+++ b/doc/api/net.md
@@ -207,8 +207,10 @@ persist*, they are removed when the last reference to them is closed. Do not
 forget JavaScript string escaping requires paths to be specified with
 double-backslashes, such as:
 
-    net.createServer().listen(
-        path.join('\\\\?\\pipe', process.cwd(), 'myctl'))
+```js
+net.createServer().listen(
+    path.join('\\\\?\\pipe', process.cwd(), 'myctl'))
+```
 
 The parameter `backlog` behaves the same as in
 [`server.listen([port][, hostname][, backlog][, callback])`][`server.listen(port, host, backlog, callback)`].
@@ -363,7 +365,7 @@ Emitted when data is received.  The argument `data` will be a `Buffer` or
 `String`.  Encoding of data is set by `socket.setEncoding()`.
 (See the [Readable Stream][] section for more information.)
 
-Note that the __data will be lost__ if there is no listener when a `Socket`
+Note that the **data will be lost** if there is no listener when a `Socket`
 emits a `'data'` event.
 
 ### Event: 'drain'
diff --git a/doc/api/process.md b/doc/api/process.md
index 94c5f2dc91..dc311872fa 100644
--- a/doc/api/process.md
+++ b/doc/api/process.md
@@ -478,7 +478,7 @@ process.argv.forEach((val, index) => {
 
 Launching the Node.js process as:
 
-```sh
+```console
 $ node process-2.js one two=three four
 ```
 
@@ -500,7 +500,7 @@ added: 6.4.0
 The `process.argv0` property stores a read-only copy of the original value of
 `argv[0]` passed when Node.js starts.
 
-```js
+```console
 $ bash -c 'exec -a customArgv0 ./node'
 > process.argv[0]
 '/Volumes/code/external/node/out/Release/node'
@@ -672,7 +672,7 @@ It is possible to modify this object, but such modifications will not be
 reflected outside the Node.js process. In other words, the following example
 would not work:
 
-```sh
+```console
 $ node -e 'process.env.foo = "bar"' && echo $foo
 ```
 
@@ -811,7 +811,7 @@ the same execution environment as the parent.
 
 For example:
 
-```sh
+```console
 $ node --harmony script.js --version
 ```
 
@@ -1461,7 +1461,7 @@ in several ways:
 3. Writes _can_ block when output is redirected to a file.
   - Note that disks are fast and operating systems normally employ write-back
     caching so this is very uncommon.
-4. Writes on UNIX __will__ block by default if output is going to a TTY
+4. Writes on UNIX **will** block by default if output is going to a TTY
    (a terminal).
 5. Windows functionality differs. Writes block except when output is going to a
    TTY.
@@ -1519,7 +1519,7 @@ in several ways:
 3. Writes _can_ block when output is redirected to a file.
   - Note that disks are fast and operating systems normally employ write-back
     caching so this is very uncommon.
-4. Writes on UNIX __will__ block by default if output is going to a TTY
+4. Writes on UNIX **will** block by default if output is going to a TTY
    (a terminal).
 5. Windows functionality differs. Writes block except when output is going to a
    TTY.
@@ -1537,7 +1537,7 @@ To check if Node.js is being run in a [TTY][] context, check the `isTTY`
 property on `process.stderr`, `process.stdout`, or `process.stdin`.
 
 For instance:
-```sh
+```console
 $ node -p "Boolean(process.stdin.isTTY)"
 true
 $ echo "foo" | node -p "Boolean(process.stdin.isTTY)"
diff --git a/doc/api/util.md b/doc/api/util.md
index 3cd80cb5dc..3ffefa3f87 100644
--- a/doc/api/util.md
+++ b/doc/api/util.md
@@ -626,7 +626,7 @@ deprecated: v4.0.0
 
 * `object` {any}
 
-Returns `true` if the given `object` is strictly an `Object` __and__ not a
+Returns `true` if the given `object` is strictly an `Object` **and** not a
 `Function`. Otherwise, returns `false`.
 
 ```js