Fixing error in config for internal-telemetry.md

- collector failed with config error:
```
error decoding 'service.telemetry': decoding failed due to the following error(s):

'traces.processors': source data must be an array or slice, got map
```

- OTLP Exporter was trying to send with SSL, to receiver that was not set up with SSL.
```
warn	[email protected]/clientconn.go:1379	[core] [Channel #1 SubChannel #8]grpc: addrConn.createTransport failed to connect to {Addr: "127.0.0.1:14317", ServerName: "localhost:14317", }. Err: connection error: desc = "transport: authentication handshake failed: tls: first record does not look like a TLS handshake"	{"grpc_log": true}
```

content/en/docs/collector/internal-telemetry.md

@@ -168,14 +168,14 @@ service:
             exporter:
               otlp:
                 protocol: grpc/protobuf
-                endpoint: localhost:14317
+                endpoint: http://localhost:14317
     traces:
       processors:
-        batch:
+      - batch:
           exporter:
             otlp:
               protocol: grpc/protobuf
-              endpoint: localhost:14317
+              endpoint: http://localhost:14317
 ```
 
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