docs: correcting some words on main page

docs/index.html

@@ -182,7 +182,7 @@ <h2>
             This quick example should make the use of the package more clear:
           </p>
           <p>
-            The first step tu use is to have a markdown template,
+            The first step to use is to have a markdown template,
             that will receive the data from the database file (.csv, .txt, .xls). Your template should look something
             like this:
           </p>