rubocop: fix the Naming/HeredocDelimiterCase cop

.rubocop_todo.yml

@@ -77,10 +77,3 @@ Naming/ConstantName:
   Exclude:
     - 'lib/pry/input_completer.rb'
     - 'spec/completion_spec.rb'
-
-# Offense count: 2
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: lowercase, uppercase
-Naming/HeredocDelimiterCase:
-  Exclude:
-    - 'spec/helpers/table_spec.rb'

spec/helpers/table_spec.rb

@@ -33,17 +33,17 @@ describe 'Formatting Table' do
     end
 
     it 'should handle a tiny case' do
-      try_round_trip(<<-eot)
+      try_round_trip(<<-TABLE)
 asdf  asfddd  fdass
-      eot
+      TABLE
     end
 
     it 'should handle the basic case' do
-      try_round_trip(<<-eot)
+      try_round_trip(<<-TABLE)
 aadd            ddasffssdad  sdsaadaasd      ssfasaafssd
 adassdfffaasds  f            sdsfasddasfds   ssssdaa
 assfsafsfsds    fsasa        ssdsssafsdasdf
-      eot
+      TABLE
     end
 
     it 'should handle... another basic case' do