fileset: use correct function name for hgignore in docstring

docstring refereed to "resolved" instead of "hgignore"

mercurial/fileset.py

@@ -228,7 +228,7 b' def unresolved(mctx, x):'
     return [f for f in mctx.subset if f in ms and ms[f] == 'u']
 
 def hgignore(mctx, x):
-    """``resolved()``
+    """``hgignore()``
     File that matches the active .hgignore pattern.
     """
     getargs(x, 0, 0, _("hgignore takes no arguments"))