fix docs typos (#1495)

Author: joelhawksley

docs/CHANGELOG.md

@@ -10,6 +10,10 @@ nav_order: 5
 
 ## main
 
+* Fix docs typos.
+
+    *Joel Hawksley*
+
 * Add architectural decisions to documentation and rename sidebar sections.
 
     *Joel Hawksley*

docs/viewcomponents-at-github.md

@@ -36,7 +36,7 @@ General-purpose ViewComponents implement common UI patterns. At GitHub, we open-
 
 App-specific ViewComponents translate a domain object (often an ActiveRecord model) into one or more general-purpose components.
 
-For example: we've a `User::AvatarComponent` that accepts a `User` ActiveRecord object and renders a `Primer::AvatarComponent`.
+For example, `User::AvatarComponent` accepts a `User` ActiveRecord object and renders a `Primer::AvatarComponent`.
 
 ## Organization