Fix some types (#21)

Author: TavoNiievez

Diff for: src/Codeception/Lib/Connector/Guzzle.php

@@ -156,7 +156,7 @@ protected function createResponse(Psr7Response $psr7Response): BrowserKitRespons
         return new BrowserKitResponse($body, $status, $headers);
     }
 
-    protected function getAbsoluteUri($uri)
+    protected function getAbsoluteUri(string $uri): string
     {
         $baseUri = $this->client->getConfig('base_uri');
         if (strpos($uri, '://') === false && strpos($uri, '//') !== 0) {

Diff for: tests/unit/Codeception/Module/TestsForWeb.php

@@ -1212,7 +1212,7 @@ public function testClickLinkWithInnerSpan()
     public function testSelectTwoSubmitsByText()
     {
         $this->module->amOnPage('/form/select_two_submits');
-        $this->module->selectOption('What kind of sandwich would you like?', 2);
+        $this->module->selectOption('What kind of sandwich would you like?', '2');
         $this->module->click('Save');
 
         $form = data::get('form');