win32text: do not mention hgext in warning

hgext/win32text.py

@@ -137,7 +137,7 b' def forbidnewline(ui, repo, hooktype, no'
                   'and also consider adding:\n'
                   '\n'
                   '[extensions]\n'
-                  'hgext.win32text =\n'
+                  'win32text =\n'
                   '[encode]\n'
                   '** = %sencode:\n'
                   '[decode]\n'

tests/test-win32text.out

@@ -35,7 +35,7 b' pretxncommit.crlf = python:hgext.win32te'
 and also consider adding:
 
 [extensions]
-hgext.win32text =
+win32text =
 [encode]
 ** = cleverencode:
 [decode]
@@ -214,7 +214,7 b' pretxncommit.crlf = python:hgext.win32te'
 and also consider adding:
 
 [extensions]
-hgext.win32text =
+win32text =
 [encode]
 ** = cleverencode:
 [decode]