DEV: Use proper wording for contexts in specs

spec/lib/validators/email_validator_spec.rb

@@ -8,7 +8,7 @@ RSpec.describe EmailValidator do
     user.errors[:email].present?
   end
 
-  context "blocked email" do
+  describe "blocked email" do
     it "doesn't add an error when email doesn't match a blocked email" do
       expect(blocks?('sam@sam.com')).to eq(false)
     end
@@ -39,7 +39,7 @@ RSpec.describe EmailValidator do
     end
   end
 
-  context "auto approve email domains" do
+  describe "auto approve email domains" do
     it "works as expected" do
       SiteSetting.auto_approve_email_domains = "example.com"