chore: fix url for crowd connector in README.md (#3823)

Signed-off-by: Ivan Mikheykin <[email protected]>

README.md

@@ -79,7 +79,7 @@ Dex implements the following connectors:
 | [AuthProxy](https://dexidp.io/docs/connectors/authproxy/) | no | yes | no | alpha | Authentication proxies such as Apache2 mod_auth, etc. |
 | [Bitbucket Cloud](https://dexidp.io/docs/connectors/bitbucketcloud/) | yes | yes | no | alpha | |
 | [OpenShift](https://dexidp.io/docs/connectors/openshift/) | yes | yes | no | alpha | |
-| [Atlassian Crowd](https://dexidp.io/docs/connectors/atlassiancrowd/) | yes | yes | yes * | beta | preferred_username claim must be configured through config |
+| [Atlassian Crowd](https://dexidp.io/docs/connectors/atlassian-crowd/) | yes | yes | yes * | beta | preferred_username claim must be configured through config |
 | [Gitea](https://dexidp.io/docs/connectors/gitea/) | yes | no | yes | beta | |
 | [OpenStack Keystone](https://dexidp.io/docs/connectors/keystone/) | yes | yes | no | alpha | |