[AWS] Fix ELB URL parsing

[legoguy1000]

What does this PR do?

Fixes the parsing for AWS ELB URLs with spaces.

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

• [ ]

How to test this PR locally

Related issues

• Resolves [aws] elb access logs fails to parse data #3491

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[elasticmachine]

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• Start Time: 2022-06-13T04:48:17.876+0000

• Duration: 31 min 19 sec

Test stats 🧪

Test	Results
Failed	0
Passed	328
Skipped	0
Total	328

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[paolafrancesca]

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (11/11)	💚
Files	91.667% (11/12)	👎 -4.787
Classes	91.667% (11/12)	👎 -4.787
Methods	82.439% (169/205)	👎 -6.853
Lines	92.673% (2087/2252)	👍 1.87
Conditionals	100.0% (0/0)	💚

[legoguy1000]

@aspacca Can we merge?