Fix code example and markdown syntax in Readme

README.md

@@ -77,10 +77,10 @@ Takes a path to a `.md` file and returns the associated page
 Takes a path to a `_index.md` file and returns the associated section
 
 ```jinja2
-{% set section = get_page(path="blog/_index.md") %}
+{% set section = get_section(path="blog/_index.md") %}
 ```
 
-####` get_url`
+#### `get_url`
 Gets the permalink for the given path.
 If the path starts with `./`, it will be understood as an internal
 link like the ones used in markdown.