URL -> URI

Author: oliverklee

src/Property/CSSNamespace.php

@@ -106,7 +106,8 @@ public function getArrayRepresentation(): array
     {
         return [
             'class' => $this->getShortClassName(),
-            'url' => $this->url->getArrayRepresentation(),
+            // We're using `uri` here instead of `url` to better match the spec.
+            'uri' => $this->url->getArrayRepresentation(),
             'prefix' => $this->prefix,
         ];
     }

tests/Unit/Property/CSSNamespaceTest.php

@@ -60,7 +60,7 @@ public function getArrayRepresentationIncludesUrlProvidedAsCssString(): void
                 'class' => 'CSSString',
                 'contents' => $uri,
             ],
-            $result['url']
+            $result['uri']
         );
     }
 
@@ -82,7 +82,7 @@ public function getArrayRepresentationIncludesUrlProvidedAsUrl(): void
                     'contents' => $uri,
                 ],
             ],
-            $result['url']
+            $result['uri']
         );
     }