Fix a link to inline.md in dropped-features/macros.md

Author: azolotko

docs/docs/reference/dropped-features/macros.md

@@ -7,7 +7,7 @@ The previous, experimental macro system has been dropped. Instead,
 there is a cleaner, more restricted system based on two complementary
 concepts: `inline` and `meta`.
 
-`inline` has been [implemented](../inline.md) in Dotty.
+`inline` has been [implemented](../other-new-features/inline.md) in Dotty.
 
 `meta` is worked on in the separate [Scalameta](http://scalameta.org) project