simplify schema.rb reset in upgrade guides

doc/update/6.x-or-7.x-to-7.3.md

@@ -64,12 +64,12 @@ sudo gem install bundler --no-ri --no-rdoc
 ```bash
 cd /home/git/gitlab
 sudo -u git -H git fetch --all
+sudo -u git -H git checkout -- db/schema.rb # local changes will be restored automatically
 ```
 
 For GitLab Community Edition:
 
 ```bash
-sudo -u git -H git checkout -- db/schema.rb # local changes will be restored automatically
 sudo -u git -H git checkout 7-3-stable
 ```
 
@@ -78,7 +78,6 @@ OR
 For GitLab Enterprise Edition:
 
 ```bash
-sudo -u git -H git checkout -- db/schema.rb # local changes will be restored automatically
 sudo -u git -H git checkout 7-3-stable-ee
 ```
 

doc/update/7.2-to-7.3.md

@@ -18,12 +18,12 @@ sudo service gitlab stop
 ```bash
 cd /home/git/gitlab
 sudo -u git -H git fetch --all
+sudo -u git -H git checkout -- db/schema.rb # local changes will be restored automatically
 ```
 
 For GitLab Community Edition:
 
 ```bash
-sudo -u git -H git checkout -- db/schema.rb # local changes will be restored automatically
 sudo -u git -H git checkout 7-3-stable
 ```
 
@@ -32,7 +32,6 @@ OR
 For GitLab Enterprise Edition:
 
 ```bash
-sudo -u git -H git checkout -- db/schema.rb # local changes will be restored automatically
 sudo -u git -H git checkout 7-3-stable-ee
 ```