pipeline: output: stackdriver: removing google api links because they're broken.

Signed-off-by: Lynette Miles <[email protected]>

Author: esmerel

pipeline/outputs/stackdriver.md

@@ -267,7 +267,7 @@ An upstream connection error means Fluent Bit wasn't able to reach Google servic
 [2019/01/07 23:24:09] [error] [oauth2] could not get an upstream connection
 ```
 
-This is due to a network issue in the environment where Fluent Bit is running. Ensure that the Host, Container, or Pod can reach the following Google API endpoints:
+This is due to a network issue in the environment where Fluent Bit is running. Ensure that the Host, Container, or Pod can reach the Google API endpoints.
 
 {% hint style="warning" %}