[pixiv] add 'comments' option (#6287)

docs/configuration.rst

@@ -1626,6 +1626,25 @@ Description
     ``gallery``.
 
 
+extractor.civitai.include
+-------------------------
+Type
+    * ``string``
+    * ``list`` of ``strings``
+Default
+    ``["user-models", "user-posts"]``
+Description
+    A (comma-separated) list of subcategories to include
+    when processing a user profile.
+
+    Possible values are
+    ``"user-models"``,
+    ``"user-posts"``,
+    ``"user-images"``.
+
+    It is possible to use ``"all"`` instead of listing all values separately.
+
+
 extractor.civitai.nsfw
 ----------------------
 Type
@@ -3465,7 +3484,20 @@ Description
     `your own account <extractor.pixiv.refresh-token_>`__,
     fetch bookmark tags as ``tags_bookmark`` metadata.
 
-    Note: This requires 1 additional API call per bookmarked post.
+    Note: This requires 1 additional API request per bookmarked post.
+
+
+extractor.pixiv.comments
+------------------------
+Type
+    ``bool``
+Default
+    ``false``
+Description
+    Fetch ``comments`` metadata.
+
+    Note: This requires 1 or more additional API requests per post,
+    depending on the number of comments.
 
 
 extractor.pixiv.work.related