Update compiler/rustc_error_codes/src/error_codes/E0549.md

jesusprubio · GuillaumeGomez · web-flow · commit 5112cf0282e3 · 2021-02-18T09:23:21.000+01:00
Co-authored-by: Guillaume Gomez &lt;guillaume1.gomez@gmail.com&gt;
diff --git a/compiler/rustc_error_codes/src/error_codes/E0549.md b/compiler/rustc_error_codes/src/error_codes/E0549.md
@@ -1,5 +1,5 @@
-The `rustc_deprecated` attribute must be paired with either `stable` or
-`unstable`.
+A `rustc_deprecated` attribute wasn't be paired with a `stable`/`unstable`
+attribute. 
 
 Erroneous code example:
 
