Fixing future tense issues

What does this MR do?

This MR addresses the changes requested by Vale to convert the documentation of the (./doc/administration/troubleshooting/navigating_gitlab_via_rails_console.md ) file, from future tense to present tense.
So all the future tense words and phrases have been replaced with equivalent present tense phrases so that Vale gives no errors during checking.

Related issues

Resolves #339547 (closed) - Fix for Vale issues for ./administration/troubleshooting/navigating_gitlab_via_rails_console.md

Author's checklist

• Consider taking the GitLab Technical Writing Fundamentals course
• Follow the:
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  • Style Guide.
• Ensure that the product tier badge is added to topic's h1.
• Request a review based on:
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  • The associated Technical Writer.

If you are only adding documentation, do not add any of the following labels:

• ~"frontend"
• ~"backend"
• ~"type::bug"
• ~"database"

These labels cause the MR to be added to code verification QA issues.

Review checklist

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