Remove CHANGELOG and fix typo

Signed-off-by: Rémy Coutable <remy@rymai.me>

CHANGELOG

@@ -5,7 +5,6 @@ v 8.11.0 (unreleased)
   - Limit git rev-list output count to one in forced push check
   - Retrieve rendered HTML from cache in one request
   - Load project invited groups and members eagerly in ProjectTeam#fetch_members
-  - Updated docs for CoffeeScript migration.
 
 v 8.10.0
   - Fix profile activity heatmap to show correct day name (eanplatter)

doc/development/gotchas.md

@@ -41,10 +41,10 @@ Rubocop](https://gitlab.com/gitlab-org/gitlab-ce/blob/8-4-stable/.rubocop.yml#L9
 
 [Exception]: http://stackoverflow.com/q/10048173/223897
 
-## Don't use inline CoffeeScript/Javascript in views
+## Don't use inline CoffeeScript/JavaScript in views
 
 Using the inline `:coffee` or `:coffeescript` Haml filters comes with a
-performance overhead. Using inline Javascript is not a good way to structure your code and should be avoided. 
+performance overhead. Using inline JavaScript is not a good way to structure your code and should be avoided.
 
 _**Note:** We've [removed these two filters](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/config/initializers/hamlit.rb)
 in an initializer._