DEV: Correct typos and spelling mistakes (#12812)

Over the years we accrued many spelling mistakes in the code base. 

This PR attempts to fix spelling mistakes and typos in all areas of the code that are extremely safe to change 

- comments
- test descriptions
- other low risk areas

spec/models/report_spec.rb

@@ -224,7 +224,7 @@ describe Report do
         end
 
         it 'returns a report with data' do
-          # expected number of recoords
+          # expected number of records
           expect(report.data.count).to eq 4
 
           # sorts the data from oldest to latest dates
@@ -724,7 +724,7 @@ describe Report do
             post.revise(sam, raw: 'updated body')
           end
 
-          it "doesn't count a revison on your own post" do
+          it "doesn't count a revision on your own post" do
             expect(report.data[0][:revision_count]).to eq(1)
             expect(report.data[0][:username]).to eq('sam')
           end