respond to an accessibility suggestion

Author: vtbassmatt

book/07-git-tools/sections/credentials.asc

@@ -19,9 +19,8 @@ Git has a few options provided in the box:
   The downside of this approach is that your passwords are stored in cleartext in a plain file in your home directory.
 * If you're using a Mac, Git comes with an "`osxkeychain`" mode, which caches credentials in the secure keychain that's attached to your system account.
   This method stores the credentials on disk, and they never expire, but they're encrypted with the same system that stores HTTPS certificates and Safari auto-fills.
-* If you're using Windows, macOS, or Linux, you can install a helper called "`Git Credential Manager.`"
+* If you're using Windows, macOS, or Linux, you can install a helper called https://github.com/GitCredentialManager/git-credential-manager["`Git Credential Manager`"].
   This uses platform-native data stores to control sensitive information.
-  It can be found at https://github.com/GitCredentialManager/git-credential-manager[].
 
 You can choose one of these methods by setting a Git configuration value: