Bump RDoc version to 7.0.1 (#1510)

We got 2 new bug fixes!
v7.0.0...master

Author: st0012

lib/rdoc/version.rb

@@ -5,6 +5,6 @@ module RDoc
   ##
   # RDoc version you are using
 
-  VERSION = '7.0.0'
+  VERSION = '7.0.1'
 
 end