chore: fix some comments

Signed-off-by: fmterrors <fmterrors@outlook.com>

backend/ulozto/ulozto.go

@@ -860,7 +860,7 @@ type RenamingObjectInfoProxy struct {
 	remote   string
 }
 
-// Remote implements fs.ObjectInfo.Remote by delegating to the wrapped instance.
+// String implements fs.ObjectInfo.String by delegating to the wrapped instance.
 func (s *RenamingObjectInfoProxy) String() string {
 	return s.delegate.String()
 }

fs/fserrors/error.go

@@ -304,12 +304,12 @@ type wrappedCountableError struct {
 	isCounted bool
 }
 
-// CountableError interface
+// Count marks this error as counted.
 func (err *wrappedCountableError) Count() {
 	err.isCounted = true
 }
 
-// CountableError interface
+// IsCounted reports whether this error has already been counted.
 func (err *wrappedCountableError) IsCounted() bool {
 	return err.isCounted
 }

fs/operations/operations_test.go

@@ -1201,7 +1201,7 @@ func (i *testFsInfo) Precision() time.Duration { return i.precision }
 // Returns the supported hash types of the filesystem
 func (i *testFsInfo) Hashes() hash.Set { return i.hashes }
 
-// Returns the supported hash types of the filesystem
+// Features returns the optional features of this Fs.
 func (i *testFsInfo) Features() *fs.Features { return &i.features }
 
 func TestSameConfig(t *testing.T) {

fs/sync/pipe.go

@@ -56,7 +56,7 @@ func (p *pipe) Len() int {
 	return len(p.queue)
 }
 
-// Len satisfy heap.Interface - must be called with lock held
+// Less satisfies heap.Interface and must be called with the lock held.
 func (p *pipe) Less(i, j int) bool {
 	return p.less(p.queue[i], p.queue[j])
 }