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/components/concern/second_factor_manager_spec.rb

@@ -129,20 +129,20 @@ RSpec.describe SecondFactorManager do
 
   describe "#has_multiple_second_factor_methods?" do
     context "when security keys and totp are enabled" do
-      it "retrns true" do
+      it "returns true" do
         expect(user.has_multiple_second_factor_methods?).to eq(true)
       end
     end
 
     context "if the totp gets disabled" do
-      it "retrns false" do
+      it "returns false" do
         disable_totp
         expect(user.has_multiple_second_factor_methods?).to eq(false)
       end
     end
 
     context "if the security key gets disabled" do
-      it "retrns false" do
+      it "returns false" do
         disable_security_key
         expect(user.has_multiple_second_factor_methods?).to eq(false)
       end