[EN] update Tightly Coupled Architecture

[Garima-Negi]

Describe your changes

This PR fixes the filename and the page title for tightly coupled architecture.
This matches Title in 'loosely coupled architecture'

Related issue number or link (ex: resolves #issue-number)

Checklist before opening this PR (put x in the checkboxes)

• [x ] This PR does not contain plagiarism
  • don’t copy other people’s work unless you are quoting and contributing it to them.
• [x ] I have signed off on all commits
  • signing off (ex: git commit -s) is to affirm that commits comply DCO. If you are working locally, you could add an alias to your gitconfig by running git config --global alias.ci "commit -s".

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[seokho-son]

Hi @Garima-Negi
Thanks! LGTM.

(please resolve the merge conflict)

[Garima-Negi]

Only those with write access to this repository can merge pull requests.

to resolve merge conflict, I'm getting this message in the PR UI :
Only those with [write access](https://docs.github.com/articles/what-are-the-different-access-permissions) to this repository can merge pull requests.

[seokho-son]

Hi @Garima-Negi :)
I don't recommend to use the "Resolve conflicts" in github UI, it frequently mix things.

Could you resolve the conflict by your local branch? If you feel difficult on that, you may open a new PR since the suggested change is simple.

[iamNoah1]

hei @Garima-Negi, are you able to do it? Or do you need some support?

[nate-double-u]

I've rebased the commit on main

[nate-double-u]

Thanks for the update @Garima-Negi, and for your patience while we reviewed it.