Fix typos

Author: ybelenko

src/Mock/OpenApiDataMocker.php

@@ -258,7 +258,7 @@ public function mockString(
                     $str = base64_encode($getLoremIpsum($inputLength));
                 }
 
-                // base64 encoding produces strings devided by 4, so resulted string can exceed maxLength parameter
+                // base64 encoding produces strings divided by 4, so resulted string can exceed maxLength parameter
                 // I think truncated(invalid) base64 string is better than oversized, cause this data is fake anyway
                 $str = $truncateOrPad($str, null, $maxLength, '. ');
                 break;

test/Mock/OpenApiDataMockerTest.php

@@ -842,7 +842,7 @@ public function provideMockArrayInvalidArguments()
             'items is nor array' => [
                 'foobar', null, null, false,
             ],
-            'items doesnt have "type" key' => [
+            'items doesn\'t have "type" key' => [
                 ['foobar' => 'foobaz'], null, null, false,
             ],
             'minItems is not integer' => [