fix dev guide link in rustc_query_system/dep_graph/README.MD

Author: vyacheslavhere

compiler/rustc_query_system/src/dep_graph/README.md

@@ -1,4 +1,3 @@
-To learn more about how dependency tracking works in rustc, see the [rustc
-guide].
+To learn more about how dependency tracking works in rustc, see the [rustc dev guide].
 
 [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/query.html