bpo-34182: Fix test_pydoc running as a script. (GH-8389)

Author: bbayles

Lib/test/test_pydoc.py

@@ -357,8 +357,9 @@ def get_pydoc_html(module):
 
 def get_pydoc_link(module):
     "Returns a documentation web link of a module"
+    abspath = os.path.abspath
     dirname = os.path.dirname
-    basedir = dirname(dirname(__file__))
+    basedir = dirname(dirname(abspath(__file__)))
     doc = pydoc.TextDoc()
     loc = doc.getdocloc(module, basedir=basedir)
     return loc