all: Fix typos found by codespell (#8833)

lib/model/folder.go

@@ -761,7 +761,7 @@ func (f *folder) scanSubdirsDeletedAndIgnored(subDirs []string, batch *scanBatch
 				fallthrough
 			case !file.IsIgnored() && !file.IsDeleted() && !file.IsUnsupported():
 				// The file is not ignored, deleted or unsupported. Lets check if
-				// it's still here. Simply stat:ing it wont do as there are
+				// it's still here. Simply stat:ing it won't do as there are
 				// tons of corner cases (e.g. parent dir->symlink, missing
 				// permissions)
 				if !osutil.IsDeleted(f.mtimefs, file.Name) {

lib/model/model.go

@@ -1906,7 +1906,7 @@ func (m *model) Request(deviceID protocol.DeviceID, folder, name string, _, size
 		if err == nil && scanner.Validate(res.data, hash, weakHash) {
 			return res, nil
 		}
-		// Fall through to reading from a non-temp file, just incase the temp
+		// Fall through to reading from a non-temp file, just in case the temp
 		// file has finished downloading.
 	}
 

lib/model/model_test.go

@@ -3957,7 +3957,7 @@ func TestIssue6961(t *testing.T) {
 	must(t, tfs.Remove(name))
 	m.ScanFolders()
 
-	// Drop ther remote index, add some other file.
+	// Drop the remote index, add some other file.
 	must(t, m.Index(device2, fcfg.ID, []protocol.FileInfo{{Name: "bar", RawInvalid: true, Sequence: 1}}))
 
 	// Pause and unpause folder to create new db.FileSet and thus recalculate everything

lib/model/requests_test.go

@@ -751,7 +751,7 @@ func TestRequestRemoteRenameChanged(t *testing.T) {
 					t.Error("Got more than one index update for", f.Name)
 				}
 				if f.Version.Counter(fc.id.Short()) == 0 {
-					// This index entry might be superseeded
+					// This index entry might be superseded
 					// by the final one or sent before it separately.
 					break
 				}