Updated composer.json, readme

Author: sorinsarca

README.md

@@ -58,7 +58,7 @@ Or you could directly reference it into your `composer.json` file as a dependenc
 }
 ```
 
-[documentation]: https://docs.opis.io/json-schema
+[documentation]: https://opis.io/json-schema
 [apache_license]: https://www.apache.org/licenses/LICENSE-2.0 "Apache License"
 [Packagist]: https://packagist.org/packages/opis/json-schema "Packagist"
 [Composer]: https://getcomposer.org "Composer"

composer.json

@@ -23,8 +23,8 @@
     "require": {
         "php": "^7.4 || ^8.0",
         "ext-json": "*",
-        "opis/string": "2020.x-dev",
-        "opis/uri": "2021.x-dev"
+        "opis/string": "^2.0",
+        "opis/uri": "^1.0"
     },
     "require-dev": {
         "ext-bcmath": "*",
@@ -43,7 +43,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "2020.x-dev"
+            "dev-master": "2.x-dev"
         }
     }
 }