doc: add --show-advanced to common options

Ticket #3974.

diff --git a/doc/common-options.rst b/doc/common-options.rst
index bd08cf0e6d28939dd4aa43fe7a9156d68defc26b..d56df99d52f49ec4dc8d43d896e4a0f9756dad15 100644 (file)
--- a/doc/common-options.rst
+++ b/doc/common-options.rst
@@ -44,3 +44,8 @@
 .. option:: --user-agent <string>
 
    Set a custom user agent string for HTTP requests.
+
+.. option:: -s, --show-advanced
+
+   Show advanced options.
+   
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