[CR] Add TODO to support expiry on Azure & GCS

Also fix tpyo.

pkg/block/adapter.go

@@ -136,7 +136,7 @@ type Adapter interface {
 	GetWalker(uri *url.URL) (Walker, error)
 	// Returns a presigned URL for accessing obj with mode, and the
 	// expiry time for this URL.  The expiry time IsZero() if reporting
-	// expiry is no supported.  The expiry time will be sooner than
+	// expiry is not supported.  The expiry time will be sooner than
 	// Config.*.PreSignedExpiry if an auth token is about to expire.
 	GetPreSignedURL(ctx context.Context, obj ObjectPointer, mode PreSignMode) (string, time.Time, error)
 	Exists(ctx context.Context, obj ObjectPointer) (bool, error)

pkg/block/azure/adapter.go

@@ -227,6 +227,7 @@ func (a *Adapter) GetPreSignedURL(ctx context.Context, obj block.ObjectPointer,
 		}
 	}
 	url, err := a.getPreSignedURL(ctx, obj, permissions)
+	// TODO(#6347): Report expiry.
 	return url, time.Time{}, err
 }
 

pkg/block/gs/adapter.go

@@ -156,6 +156,7 @@ func (a *Adapter) GetPreSignedURL(ctx context.Context, obj block.ObjectPointer,
 		a.log(ctx).WithError(err).Error("error generating pre-signed URL")
 		return "", time.Time{}, err
 	}
+	// TODO(#6347): Report expiry.
 	return k, time.Time{}, nil
 }