Fix Ruby lambda operator scope

Author: joseramonc

Ruby/Ruby.sublime-syntax

@@ -861,8 +861,8 @@ contexts:
       scope: support.function.builtin.ruby
       push: function-call-arguments
     # Lambda operator from the Kernel class not handled elsewhere
-    - match: ->
-      scope: support.function.builtin.ruby
+    - match: '->'
+      scope: meta.function.ruby storage.type.function.ruby keyword.declaration.function.lambda.ruby
       push: function-call-arguments
     # Methods from the Module class not handled elsewhere
     - match: |-

Ruby/syntax_test_ruby.rb

@@ -1129,7 +1129,7 @@ class MyClass
 #^^^^ support.function.builtin
 
  ->
-#^^ support.function.builtin
+#^^ meta.function.ruby storage.type.function.ruby keyword.declaration.function.lambda.ruby
 
 
 ##################