doc: add missing periods or colons

Some other formatting nits were fixed
and some superfluous descriptions were simplified in passing.

PR-URL: https://github.com/nodejs/node/pull/20401
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/doc/api/modules.md b/doc/api/modules.md
index 92250544e0..5204a0ca61 100644
--- a/doc/api/modules.md
+++ b/doc/api/modules.md
@@ -706,7 +706,7 @@ this, assign the desired export object to `module.exports`. Note that assigning
 the desired object to `exports` will simply rebind the local `exports` variable,
 which is probably not what is desired.
 
-For example suppose we were making a module called `a.js`
+For example suppose we were making a module called `a.js`:
 
 ```js
 const EventEmitter = require('events');
@@ -720,7 +720,7 @@ setTimeout(() => {
 }, 1000);
 ```
 
-Then in another file we could do
+Then in another file we could do:
 
 ```js
 const a = require('./a');