[extractor/common] Fix typo in thumbnails resolution description (#21817)

diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index 9c3e9eec6fb91e000dc632736691b53162dc4d05..85978661793a77411419d619f654a33755d23d4b 100644 (file)
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -220,7 +220,7 @@ class InfoExtractor(object):
                         * "preference" (optional, int) - quality of the image
                         * "width" (optional, int)
                         * "height" (optional, int)
-                        * "resolution" (optional, string "{width}x{height"},
+                        * "resolution" (optional, string "{width}x{height}",
                                         deprecated)
                         * "filesize" (optional, int)
     thumbnail:      Full URL to a video thumbnail image.