Merge pull request #482 from rspec/fix-simplecov-source-file-filter-main

Fix simplecov source file filter

Author: JonRowe

lib/rspec/support/spec.rb

@@ -65,8 +65,8 @@ def self.setup_simplecov(&block)
 
       def self.start_simplecov(&block)
         SimpleCov.start do
-          add_filter "./bundle/"
-          add_filter "./tmp/"
+          add_filter "bundle/"
+          add_filter "tmp/"
           add_filter do |source_file|
             # Filter out `spec` directory except when it is under `lib`
             # (as is the case in rspec-support)