Quote wildcards to avoid issues in some shells, fixes #7960

doc/03-cli.md

@@ -138,7 +138,7 @@ php composer.phar update vendor/package vendor/package2
 You can also use wildcards to update a bunch of packages at once:
 
 ```sh
-php composer.phar update vendor/*
+php composer.phar update "vendor/*"
 ```
 
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