Merge branch 'proof-read' into 'master'

Fix typos in dev & test docu

See merge request gitlab-org/gitlab-ce!24539

doc/development/automatic_ce_ee_merge.md

@@ -148,7 +148,7 @@ merge commit SHA is `138f5e2f20289bb376caffa0303adb0cac859ce1`:
 - To cherry-pick multiple commits, such as B and D in a range [A > B > C > D], use:
 
     ```shell
-    git cherry-pick commmit-B-SHA commit-D-SHA
+    git cherry-pick commit-B-SHA commit-D-SHA
     ```
 
     For example, suppose commit B SHA = `4f5e4018c09ed797fdf446b3752f82e46f5af502`,
@@ -213,7 +213,7 @@ being able to deploy.
 No, not if there is an EE merge request for every CE merge request that causes
 conflicts _and_ that EE merge request is merged first. In the past we may have
 been a bit more relaxed when it comes to enforcing EE merge requests, but to
-enable automatic merging have to start requiring such merge requests even for
+enable automatic merging we have to start requiring such merge requests even for
 the smallest conflicts.
 
 ### Some files I work with often conflict, how can I best deal with this?

spec/requests/api/submodules_spec.rb

@@ -64,7 +64,7 @@ describe API::Submodules do
         expect(response).to have_gitlab_http_status(400)
       end
 
-      it 'returns the commmit' do
+      it 'returns the commit' do
         head_commit = project.repository.commit.id
 
         put api(route(submodule), user), params: params
@@ -81,7 +81,7 @@ describe API::Submodules do
         let(:branch) { 'submodule_inside_folder' }
         let(:encoded_submodule) { CGI.escape(submodule) }
 
-        it 'returns the commmit' do
+        it 'returns the commit' do
           expect(Submodules::UpdateService)
             .to receive(:new)
                   .with(any_args, hash_including(submodule: submodule))