Corrected expected plugin doc with changes to screenshot embed

Author: emanlove

utest/test/api/approved_files/PluginDocumentation.test_parse_plugin_init_doc.approved.txt

@@ -7,8 +7,8 @@ SeleniumLibrary can be imported with several optional arguments.
 - ``run_on_failure``:
   Default action for the `run-on-failure functionality`.
 - ``screenshot_root_directory``:
-  Path to folder where possible screenshots are created or EMBED.
-  See `Set Screenshot Directory` keyword for further details about EMBED.
+  Path to folder where possible screenshots are created or EMBED or BASE64.
+  See `Set Screenshot Directory` keyword for further details about EMBED and BASE64.
   If not given, the directory where the log file is written is used.
 - ``plugins``:
   Allows extending the SeleniumLibrary with external Python classes.