Update src/doc/src/faq.md

Co-authored-by: Weihang Lo <[email protected]>

src/doc/src/faq.md

@@ -179,7 +179,7 @@ returns an error in case it would access the network.
 You can use [`cargo fetch`] in one project to download
 dependencies before going offline, and then use those same dependencies in
 another project. Refer to [configuration value][offline config]) to set via
-config.
+Cargo configuration.
 
 
 Also related is sthe flag `--locked`, which requires arequires a `Cargo.lock`