Fix pattern in test_labelme_1.py

tests/docs_tests/man_tests/test_labelme_1.py

@@ -21,7 +21,7 @@ with open(man_file) as f:
 patterns_exclude = [
     r'^\.TH .*',
     r'^config file.*',
-    r'^\.\\\\.*',
+    r'^\.\\.*',
 ]
 
 PASS = 1