fix comment

Signed-off-by: Jason Parraga <sovietaced@gmail.com>

Author: Sovietaced

tox.ini

@@ -12,7 +12,7 @@ envlist =
     ; below mean these dependencies are being used:
     ; 0: protobuf==3.20.3
     ; 1: protobuf==4.25.3
-    ; 2: protobuf==5.27.0
+    ; 2: protobuf==5.26.0
     py3{8,9,10,11}-opentelemetry-protobuf-{0,1,2}
     pypy3-opentelemetry-protobuf-{0,1,2}