Fix the documentation that erroneously says you can use short versions
of help flags

Fixes #4564

PiperOrigin-RevId: 650730047
Change-Id: I3a52aca490338066c607e34ab20c827bfde5090d
diff --git a/docs/advanced.md b/docs/advanced.md
index 2ecce63..240588a 100644
--- a/docs/advanced.md
+++ b/docs/advanced.md
@@ -1814,7 +1814,7 @@
 `::testing::InitGoogleTest()` before calling `RUN_ALL_TESTS()`.
 
 To see a list of supported flags and their usage, please run your test program
-with the `--help` flag. You can also use `-h`, `-?`, or `/?` for short.
+with the `--help` flag.
 
 If an option is specified both by an environment variable and by a flag, the
 latter takes precedence.