chore: remove repetitive words in comments

Signed-off-by: xiaoxiangxianzi <zhaoyizheng@outlook.com>

configuration/configuration.go

@@ -279,7 +279,7 @@ type FileChecker struct {
 
 // Redis configures the redis pool available to the registry webapp.
 type Redis struct {
-	// Addr specifies the the redis instance available to the application.
+	// Addr specifies the redis instance available to the application.
 	Addr string `yaml:"addr,omitempty"`
 
 	// Usernames can be used as a finer-grained permission control since the introduction of the redis 6.0.

registry/storage/blobwriter.go

@@ -230,7 +230,7 @@ func (bw *blobWriter) validateBlob(ctx context.Context, desc distribution.Descri
 	}
 
 	if fullHash {
-		// a fantastic optimization: if the the written data and the size are
+		// a fantastic optimization: if the written data and the size are
 		// the same, we don't need to read the data from the backend. This is
 		// because we've written the entire file in the lifecycle of the
 		// current instance.

registry/storage/tagstore.go

@@ -54,7 +54,7 @@ func (ts *tagStore) All(ctx context.Context) ([]string, error) {
 	return tags, nil
 }
 
-// Tag tags the digest with the given tag, updating the the store to point at
+// Tag tags the digest with the given tag, updating the store to point at
 // the current tag. The digest must point to a manifest.
 func (ts *tagStore) Tag(ctx context.Context, tag string, desc distribution.Descriptor) error {
 	currentPath, err := pathFor(manifestTagCurrentPathSpec{