Update feature-specification.md (#3425)

Fix a typo.

---

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Author: scheglov

working/macros/feature-specification.md

@@ -252,7 +252,7 @@ user can *control* that order. We use syntactic order to control application
 order of macros:
 
 *   **Macros are applied to inner declarations before outer ones.** Macros
-    applied to members are applied before members on the surrounding type.
+    applied to members are applied before macros on the surrounding type.
     Macros on top-level declarations are applied before macros on the main
     `library` directive.