minor symfony#52865 remove $ so gitclip works (tacman)

This PR was merged into the 7.1 branch.

Discussion
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remove $ so gitclip works

| Q             | A
| ------------- | ---
| Branch?       | 7.0
| Bug fix?      | no
| New feature?  no <!-- please update src/**/CHANGELOG.md files -->
| License       | MIT

Using the copy button puts the $ into the clipboard, so it work or to simply paste it on the command line.

Commits
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b26386c remove $ so gitclip works

Author: fabpot

src/Symfony/Component/Translation/README.md

@@ -6,8 +6,8 @@ The Translation component provides tools to internationalize your application.
 Getting Started
 ---------------
 
-```
-$ composer require symfony/translation
+```bash
+composer require symfony/translation
 ```
 
 ```php