[pinterest] adjust regex pattern

gallery_dl/extractor/pinterest.py

@@ -37,7 +37,7 @@ class PinterestExtractor(Extractor):
 class PinterestPinExtractor(PinterestExtractor):
     """Extractor for images from a single pin from pinterest.com"""
     subcategory = "pin"
-    pattern = [r"(?:https?://)?(?:www\.)?pinterest\.com/pin/([^/]+)"]
+    pattern = [r"(?:https?://)?(?:[^./]+\.)?pinterest\.com/pin/([^/]+)"]
     test = [("https://www.pinterest.com/pin/858146903966145189/", {
         "url": "7abf2be76bf03d452feacf6e000b040fc2706b80",
         "keyword": "e1a2ce625ece86f0b31f0ae94a3af3d72e6454b9",
@@ -61,7 +61,7 @@ class PinterestBoardExtractor(PinterestExtractor):
     category = "pinterest"
     subcategory = "board"
     directory_fmt = ["{category}", "{user}", "{board}"]
-    pattern = [r"(?:https?://)?(?:www\.)?pinterest\.com/(?!pin/)([^/]+)/([^/]+)"]
+    pattern = [r"(?:https?://)?(?:[^./]+\.)?pinterest\.com/(?!pin/)([^/]+)/([^/]+)"]
     test = [("https://www.pinterest.com/g1952849/test-/", {
         "url": "705ee521630a5d613b0449d694a5345e684572a9",
         "keyword": "2815716747f84fa0a4047d29d71df8ae96a0e177",