fix:Documentation: Clarify migrations are not always required

[us3r64bit]

issue appwrite/appwrite#3624

[gewenyu99]

Hey! Thanks for contributing to our docs :D

We do already mention this is a notice on line 10:

docs/app/views/docs/upgrade.phtml

Line 10 in d3c1728

<p>You do not need to run migration when upgrading to a minor version. For example, going from 0.13.0 to 0.13.2 would not require running migration.</p>

What I suggest is the following:

• Removing the (Optional) from the heading and adding a notice
• Remove the notice text from line 10.
• Add your note in a proper notice

[us3r64bit]

Please check it out
Tell me if there is anything to change

[gewenyu99]

There's a notice element we use in our docs, it'll look like this:

-<p>[Note:You do not need to run migration when upgrading to a minor version. For example, going from 0.13.0 to 0.13.2 would not require running migration.] </p>
+<div class="notice margin-bottom">
+    <h3>Upgrading to a minor version</h3>
+    <p>You do not need to run migration when upgrading to a minor version. For example, going from 0.13.0 to 0.13.2 would not require running migration.</p>
+</div>

This will render it in a blue notice like this.

[us3r64bit]

Thanks for checking it out
I've made changes as per your request

[gewenyu99]

Let me test the change out real quick and give you a render :)

[gewenyu99]

[gewenyu99]

LGTM, tiny grammatical suggestion, I'll merge after this :)

[us3r64bit]

In case you miss 👍
I've made changes as per your suggestion 😄

[gewenyu99]

LGTM! Merged