pipeline: parsers: json: fix typos (#704)

Signed-off-by: Diogo Recharte <[email protected]>

Author: recharte

pipeline/parsers/json.md

@@ -1,6 +1,6 @@
 # JSON
 
-The JSON parser is the simplest option: if the original log source is a JSON map string, it will take it structure and convert it directly to the internal binary representation.
+The JSON parser is the simplest option: if the original log source is a JSON map string, it will take its structure and convert it directly to the internal binary representation.
 
 A simple configuration that can be found in the default parsers configuration file, is the entry to parse Docker log files \(when the tail input plugin is used\):
 
@@ -18,7 +18,7 @@ The following log entry is a valid content for the parser defined above:
 {"key1": 12345, "key2": "abc", "time": "2006-07-28T13:22:04Z"}
 ```
 
-After processing, it internal representation will be:
+After processing, its internal representation will be:
 
 ```text
 [1154103724, {"key1"=>12345, "key2"=>"abc"}]