fortigate_fortigate: fix indentation in hbs templates

[efd6]

Proposed commit message

See title.

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• 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.

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• Start Time: 2023-11-21T08:18:23.689+0000

• Duration: 18 min 25 sec

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Test	Results
Failed	0
Passed	11
Skipped	0
Total	11

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (1/1)	💚
Files	100.0% (4/4)	💚 3.636
Classes	100.0% (4/4)	💚 3.636
Methods	100.0% (40/40)	💚 7.625
Lines	92.686% (1318/1422)	👍 4.056
Conditionals	100.0% (0/0)	💚

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Package fortinet_fortigate - 1.22.1 containing this change is available at https://epr.elastic.co/search?package=fortinet_fortigate