Update tox.ini

Author: emdneto

tox.ini

@@ -181,7 +181,7 @@ envlist =
     ; below mean these dependencies are being used:
     ; 0: urllib3 >=1.0.0,<2.0.0
     ; 1: urllib3 >=2.0.0,<3.0.0
-    ; TODO: Add py314 testing after replacing httpretty -- problem with https tests in 3.14
+    ; TODO #4200  Add py314 testing after replacing httpretty -- problem with https tests in 3.14
     py3{9,10,11,12,13}-test-instrumentation-urllib3-{0,1}
     pypy3-test-instrumentation-urllib3-{0,1}
     lint-instrumentation-urllib3