Fix test documentation directive typo

Changes:
   - Fix typo in test code

Error:
test_network_sub_menu.robot' on line 215:
      Non-existing setting 'Documentaion'.

Teted:
   - Ran from sandbox

Change-Id: Id8100326419e17b200715e730212efe71ea8b66d
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/gui/gui_test/settings_menu/test_network_sub_menu.robot b/gui/gui_test/settings_menu/test_network_sub_menu.robot
index 71d49f3..a824b5a 100644
--- a/gui/gui_test/settings_menu/test_network_sub_menu.robot
+++ b/gui/gui_test/settings_menu/test_network_sub_menu.robot
@@ -212,7 +212,7 @@
     Set Suite Variable  ${default_gateway}
 
 Launch Browser Login GUI And Navigate To Network Page
-    [Documentaion]  Launch browser Login GUI and navigate to network page.
+    [Documentation]  Launch browser Login GUI and navigate to network page.
 
     Launch Browser And Login GUI
     Wait Until Keyword Succeeds  1 min  15 sec