Reduced the timeout on the expected timeout within expected conditions

The delay for the title change was 600 miliseconds while the timeout was
0.5 seconds. I suspect this gives little time for error. The 600
milisecond timeout was specifically choosen along with the other
timeouts in the expected conditions tests such that any combination of
delays would be unique. This gives us a framework to test various
combinations. So I didn't want to change that. Noting I could simply
swap the 600 millisecond test for the 900 millisecond tes .. which might
be the best bet. But for now trying to reduce the timeout to 0.3
seconds.

atest/acceptance/keywords/expected_conditions.robot

@@ -10,10 +10,10 @@ Wait For Expected Conditions One Argument
     Title Should Be    Delayed
 
 Wait For Expected Condition Times out within set timeout
-    [Documentation]  FAIL REGEXP: TimeoutException: Message: Expected Condition not met within set timeout of 0.5*
+    [Documentation]  FAIL REGEXP: TimeoutException: Message: Expected Condition not met within set timeout of 0.3*
     Title Should Be    Original
     Click Element    link=delayed change title
-    Wait For Expected Condition   title_is  Delayed  timeout=0.5
+    Wait For Expected Condition   title_is  Delayed  timeout=0.3
 
 Wait For Expected Conditions using WebElement as locator
     Click Button    Change the button state