fixed naming

spec/models/hint_spec.rb

@@ -1,25 +1,25 @@
 require 'rails_helper'
 
 describe Hint do
-  let(:user) { Hint.create }
+  let(:hint) { Hint.create }
 
   it 'validates the presence of an execution environment' do
-    expect(user.errors[:execution_environment_id]).to be_present
+    expect(hint.errors[:execution_environment_id]).to be_present
   end
 
   it 'validates the presence of a locale' do
-    expect(user.errors[:locale]).to be_present
+    expect(hint.errors[:locale]).to be_present
   end
 
   it 'validates the presence of a message' do
-    expect(user.errors[:message]).to be_present
+    expect(hint.errors[:message]).to be_present
   end
 
   it 'validates the presence of a name' do
-    expect(user.errors[:name]).to be_present
+    expect(hint.errors[:name]).to be_present
   end
 
   it 'validates the presence of a regular expression' do
-    expect(user.errors[:regular_expression]).to be_present
+    expect(hint.errors[:regular_expression]).to be_present
   end
 end