Fixing error in YAML examples for multiline parsing yaml doc. (fluent#1874)

Signed-off-by: Eric D. Schabell <[email protected]>
Signed-off-by: Tom <[email protected]>

Author: eschabell

administration/configuring-fluent-bit/multiline-parsing.md

@@ -189,9 +189,10 @@ multiline_parsers:
       rules:
         - state: start_state
           regex: '/([a-zA-Z]+ \d+ \d+\:\d+\:\d+)(.*)/'
-          next_state:  cont
+          next_state: cont
         - state: cont
           regex: '/^\s+at.*/'
+          next_state: cont
 ```