doc: prefer ipv6 in sample instead of ipv4 (knative#2905)

Signed-off-by: Matej Vašek <[email protected]>

Author: matejvasek

cmd/run.go

@@ -71,7 +71,7 @@ EXAMPLES
 	  $ {{rootCmdUse}} run --container=false
 
 	o Run the function locally on a specific address.
-	  $ {{rootCmdUse}} run --address=0.0.0.0:8081
+	  $ {{rootCmdUse}} run --address='[::]:8081'
 
 	o Run the function locally and output JSON with the service address.
 	  $ {{rootCmdUse}} run --json

docs/reference/func_run.md

@@ -53,7 +53,7 @@ EXAMPLES
 	  $ func run --container=false
 
 	o Run the function locally on a specific address.
-	  $ func run --address=0.0.0.0:8081
+	  $ func run --address='[::]:8081'
 
 	o Run the function locally and output JSON with the service address.
 	  $ func run --json