4.0 user upgrade guide: minor formatting tweaks

Author: jrfnl

wiki/Version-4.0-User-Upgrade-Guide.md

@@ -37,7 +37,7 @@ There is a separate [[Upgrade Guide for Sniff Developers and Integrators|Version
 It is highly recommended to upgrade as soon as you are able.
 
 The PHP_CodeSniffer 3.x branch will no longer receive updates, with the exception of security fixes and runtime compatibility fixes for new PHP versions.
-This "limited support" will last a maximum of one year from the date of the PHP_Codesniffer 4.0.0 release.
+This "limited support" will last a maximum of one year from the date of the PHP_CodeSniffer 4.0.0 release.
 
 ### External Standards
 
@@ -402,7 +402,7 @@ Now you can "inherit" the default value and add to it by using `extend="true"`:
 <p align="right"><a href="#table-of-contents">back to top</a></p>
 
 
-### My scans are failing on a "No files were checked" error...
+### My scans are failing on a "No files were checked" error
 
 Between the extension filtering via `--extensions=...` (CLI) / `<arg name="extensions" value="..."/>` (ruleset), potential `--ignore=...` (CLI) / `<exclude-pattern>...` (ruleset) directives being followed, and potential `--filter=...` directives, there are no files eligible for scanning.