doc: fix corepack grammar for --force flag

PR-URL: #40762
Reviewed-By: Tobias Nießen <[email protected]>
Reviewed-By: Juan José Arboleda <[email protected]>
Reviewed-By: Voltrex <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>

doc/api/corepack.md

@@ -100,7 +100,7 @@ install. To avoid this problem, consider one of the following options:
 binaries anyway and will ensure that the requested versions are always
 available, so installing the package managers explicitly isn't needed anymore.
 
-* Add the `--force` to `npm install`; this will tell npm that it's fine to
+* Add the `--force` flag to `npm install`; this will tell npm that it's fine to
 override binaries, but you'll erase the Corepack ones in the process (should
 that happen, run [`corepack enable`][] again to add them back).