update deserialize_cd_keys documentation

src/models/content.rs

@@ -83,7 +83,7 @@ fn deserialize_title<D>(deserializer: D) -> Result<String, D::Error>
 /// - if there is at least one `:`
 ///     - split at `:`
 ///     - every odd position in the resulting array is a key name, every even its corresponding value
-/// - if not
+/// - else
 ///     - the content name is the key name and the value is used as is
 ///
 fn deserialize_cd_keys(content_title: &str, raw_cd_keys: &str) -> BTreeMap<String, String> {