docs: make technical prose concrete

packages/credentials/credentials-local/src/index.ts

@@ -344,7 +344,7 @@ export class CredentialsLocal extends Credentials {
   /* jscpd:ignore-start -- the operation-chain and reload lifecycle is the same
      reviewed contract as settings-local, deliberately mirrored (prefer symmetry
      for parallel values); the two providers own different documents and
-     failure policies, so extracting the shape would couple their teardown
+     failure policies, so extracting a shared helper would couple their teardown
      semantics across packages for a handful of lines. */
   /** Queue one exclusive document operation behind every earlier one. */
   private enqueue<T>(operation: () => Promise<T>): Promise<T> {