infoblox_nios: fix configuration page

[efd6]

What does this PR do?

This fixes a duplication of the log file input path in the configuration page for infoblox_nios. It also harmonises the input title for the file input with the two others. See screenshots below.

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.

Author's Checklist

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After this change:

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• Start Time: 2022-09-20T03:02:42.392+0000

• Duration: 15 min 22 sec

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Test	Results
Failed	0
Passed	36
Skipped	0
Total	36

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Name	Metrics % (covered/total)	Diff
Packages	100.0% (1/1)	💚
Files	100.0% (4/4)	💚
Classes	100.0% (4/4)	💚
Methods	100.0% (37/37)	💚
Lines	95.455% (462/484)	❕
Conditionals	100.0% (0/0)	💚

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