Change to correct directory in update instructions

[ci skip]

doc/update/8.10-to-8.11.md

@@ -49,6 +49,8 @@ sudo gem install bundler --no-ri --no-rdoc
 ### 4. Get latest code
 
 ```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
 ```

doc/update/8.11-to-8.12.md

@@ -49,6 +49,8 @@ sudo gem install bundler --no-ri --no-rdoc
 ### 4. Get latest code
 
 ```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
 ```

doc/update/8.12-to-8.13.md

@@ -49,6 +49,8 @@ sudo gem install bundler --no-ri --no-rdoc
 ### 4. Get latest code
 
 ```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
 ```

doc/update/8.13-to-8.14.md

@@ -49,6 +49,8 @@ sudo gem install bundler --no-ri --no-rdoc
 ### 4. Get latest code
 
 ```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
 ```