[Wazuh API] Fix the requests GET //

[yenienserrano]

Description

Replace all the requests to GET // by the valid endpoint to avoid redirection and a useless request.

Issues Resolved

[Wazuh API] [Optimization] Fix the requests GET //#3634

Test

see the logs of the wazuh api and in the UI go to the agents table and see that the redirect "//" is no longer done, it only does the "/"

Check List

• Replace all the requests to GET // by the valid endpoint to avoid redirection and a useless request.

[CPAlejandro]

Remember to add the Changelog.md

[CPAlejandro]

CR and Testing: LGTM!

[Desvelao]

Changes

• Removed the space in the root Wazuh API endpoint (related to GET / requests in the previous commits of this PR)
• Fixed the requirement for the path endpoint that should start with /. Now uses .startsWith function instead of a regular expression that required something more than / in the path

API logs (/var/ossec/logs/api.log)

2021/11/02 09:55:09 INFO: wazuh-wui 172.17.1.1 "GET /" with parameters {} and body {} done in 0.033s: 200

[github-actions]

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[gabiwassan]

LGTM!