minor #40100 Updated README.md (Knallcharge)

This PR was merged into the 5.3-dev branch.

Discussion
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Updated README.md

fixed typo in url

| Q             | A
| ------------- | ---
| Branch?       | 5.x for features / 4.4, 5.1 or 5.2 for bug fixes <!-- see below -->
| Bug fix?      | yes
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       | Fix #... <!-- prefix each issue number with "Fix #", no need to create an issue if none exist, explain below instead -->
| License       | MIT
| Doc PR        | symfony/symfony-docs#... <!-- required for new features -->
<!--
Replace this notice by a short README for your feature/bugfix. This will help people
understand your PR and can be used as a start for the documentation.

Additionally (see https://symfony.com/releases):
 - Always add tests and ensure they pass.
 - Never break backward compatibility (see https://symfony.com/bc).
 - Bug fixes must be submitted against the lowest maintained branch where they apply
   (lowest branches are regularly merged to upper ones so they get the fixes too.)
 - Features and deprecations must be submitted against branch 5.x.
-->

Commits
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309d2ac5f5 Update README.md

src/Symfony/Component/Notifier/Bridge/Zulip/README.md

@@ -1,7 +1,7 @@
 Zulip Notifier
 ==============
 
-Provides [Zulip](https://zulip.comw) integration for Symfony Notifier.
+Provides [Zulip](https://zulip.com) integration for Symfony Notifier.
 
 DSN example
 -----------