minor symfony#3131 [TwigComponent] Remove floating text in documentation (alexislefebvre)

This PR was merged into the 2.x branch.

Discussion
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[TwigComponent] Remove floating text in documentation

| Q              | A
| -------------- | ---
| Bug fix?       | no
| New feature?   | no
| Deprecations?  | no
| Documentation? | yes
| Issues         | -
| License        | MIT

This looked weird:

> <img width="784" height="223" alt="image" src="https://github.com/user-attachments/assets/d88485e3-ea01-4cc4-9286-80cfb7ded773" />

Commits
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357f42b TwigComponent: remove floating text

Author: Kocal

src/TwigComponent/doc/index.rst

@@ -41,8 +41,6 @@ Enjoy your new component!
 .. image:: images/alert-example.png
     :alt: Example of the Alert Component
 
-    Example of the Alert Component
-
 This brings the familiar "component" system from client-side frameworks
 into Symfony. Combine this with `Live Components`_, to create
 an interactive frontend with automatic, Ajax-powered rendering.