Merge pull request #20037 from mheon/fix_sigproxy_docs

[CI:DOCS] Docs on sig-proxy are wrong, we support TTY

Author: openshift-merge-robot

docs/source/markdown/options/sig-proxy.md

@@ -4,4 +4,4 @@
 ####> are applicable to all of those.
 #### **--sig-proxy**
 
-Proxy received signals to the container process (non-TTY mode only). SIGCHLD, SIGSTOP, and SIGKILL are not proxied.
+Proxy received signals to the container process. SIGCHLD, SIGURG, SIGSTOP, and SIGKILL are not proxied.