source-replacement.md: fix typo (#15458)

Author: weihanglo

src/doc/src/reference/source-replacement.md

@@ -27,7 +27,7 @@ dependencies], and private registry support is described in [the Registries
 chapter][registries].
 
 When using source replacement, running commands like `cargo publish` that need to
-contact the registry require passing the `--registry` option. This helps avoid
+contact the registry requires passing the `--registry` option. This helps avoid
 any ambiguity about which registry to contact, and will use the authentication
 token for the specified registry.