[#10422] Suppress useless redirection

docs/requirements.in

@@ -1,5 +1,5 @@
 # Minimal requirement file used to create requirements.txt
-# Process it with `pip-compile -r requirements.in > requirements.txt`
+# Process it with `pip-compile -r requirements.in`
 # See #10319, #10422 and https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html#pin-your-transitive-dependencies
 # See #10318, #10420 for current versions
 sphinx==6.2.1