Merge pull request #196 from Kijewski/pr-upper

 filters: minor fixups

rinja/src/filters/builtin.rs

@@ -201,8 +201,7 @@ pub fn lower(s: impl fmt::Display) -> Result<String, fmt::Error> {
     lower(try_to_string(s)?)
 }
 
-/// Alias for the `lower()` filter
-/// Converts to lowercase
+/// Converts to lowercase, alias for the `|lower` filter
 ///
 /// ```
 /// # #[cfg(feature = "code-in-doc")] {
@@ -265,14 +264,13 @@ pub fn upper(s: impl fmt::Display) -> Result<String, fmt::Error> {
     upper(try_to_string(s)?)
 }
 
-/// Alias for the `upper()` filter
-/// Converts to uppercase
+/// Converts to uppercase, alias for the `|upper` filter
 ///
 /// ```
 /// # #[cfg(feature = "code-in-doc")] {
 /// # use rinja::Template;
 /// /// ```jinja
-/// /// <div>{{ word|upper }}</div>
+/// /// <div>{{ word|uppercase }}</div>
 /// /// ```
 /// #[derive(Template)]
 /// #[template(ext = "html", in_doc = true)]