Update readme fixture checker and readme (#699)

devtools/check_readme_vs_fixtures.py

@@ -1,4 +1,5 @@
 """Script that checks if README.md is missing devices that have fixtures."""
+import re
 import sys
 
 from kasa.tests.conftest import (
@@ -32,10 +33,11 @@ def _get_device_type(dev, typemap):
 
 found_unlisted = False
 for dev in ALL_DEVICES:
-    if dev not in readme:
+    regex = rf"^\*.*\s{dev}"
+    match = re.search(regex, readme, re.MULTILINE)
+    if match is None:
         print(f"{dev} not listed in {_get_device_type(dev, typemap)}")
         found_unlisted = True
 
-
 if found_unlisted:
     sys.exit(-1)