[tcp/udp] Fix indentation of syslog processor in agent handlebars file

[taylor-swanson]

What does this PR do?

Fixes the indentation of the syslog processor in the agent handlebars file.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

Related issues

• Closes end of the stream or a document separator is expected at line 13, column 1:  #4525

[elasticmachine]

💚 Build Succeeded

the below badges are clickable and redirect to their specific view in the CI or DOCS

Expand to view the summary

Build stats

• Start Time: 2022-11-01T19:54:26.689+0000

• Duration: 17 min 31 sec

Test stats 🧪

Test	Results
Failed	0
Passed	9
Skipped	0
Total	9

🤖 GitHub comments

Expand to view the GitHub comments

To re-run your PR in the CI, just comment with:

• /test : Re-trigger the build.

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (0/0)	💚
Files	100.0% (0/0)	💚 2.483
Classes	100.0% (0/0)	💚 2.483
Methods	100.0% (6/6)	💚 9.193
Lines	100.0% (0/0)	💚 8.42
Conditionals	100.0% (0/0)	💚

[elasticmachine]

Pinging @elastic/security-external-integrations (Team:Security-External Integrations)