docs: updated Flask-Babel link and fix typo (#2166)

* Update i18n.rst

Update Flask-Babel link and fix typo

* Update i18n.rst

Added newline at end of the file

---------

Co-authored-by: Daniel Vaz Gaspar <danielvazgaspar@gmail.com>

docs/i18n.rst

@@ -27,12 +27,12 @@ This means that all messages, builtin on the framework are translated to these l
 You can add your own translations for your application, using Flask-Babel.
 
 You can add your own translations, and your own language support.
-Take a look at `Flask-Babel <http://pythonhosted.org/Flask-Babel>`_ for setup an babel initial configuration.
+Take a look at `Flask-Babel <https://python-babel.github.io/flask-babel>`_ for setup an babel initial configuration.
 
 Initial Configuration
 ---------------------
 
-On you projects root create a directory named babel,
+On your projects root create a directory named babel,
 then create and edit a file named babel.cfg with the following content (this configuration is already made on the
 base skeleton application)::
 
@@ -130,4 +130,3 @@ If you want to, or if you're using a version prior to 1.3.0 you can use::
         }
 
 And that's it!
-