Fixes

Author: javiereguiluz

testing/functional_tests_assertions.rst

@@ -75,7 +75,7 @@ Crawler
 .. versionadded:: 4.4
 
     Starting from Symfony 4.4, when using `symfony/panther`_ for end-to-end
-    testing, you can use all the above ssertions except the ones related to
-    the Crawler.
+    testing, you can use all the above assertions except the ones related to
+    the :doc:`Crawler </components/dom_crawler>`.
 
 .. _`symfony/panther`: https://github.com/symfony/panther