moved renamed docs | ext-expand-inner-exprs.rs

Author: Kivooeo

tests/ui/ext-expand-inner-exprs.rs renamed to tests/ui/macros/nested-macro-expansion.rs

@@ -1,3 +1,5 @@
+//! Test nested macro expansion with concat! macros
+
 //@ run-pass
 
 static FOO : &'static str = concat!(concat!("hel", "lo"), "world");