update value preparation, add comments

src/line/list.rs

@@ -1,10 +1,12 @@
 use glib::{Regex, RegexCompileFlags, RegexMatchFlags};
 
+/// [List item](https://geminiprotocol.net/docs/gemtext-specification.gmi#list-items)
 pub struct List {
     pub value: String,
 }
 
 impl List {
+    /// Parse `Self` from string
     pub fn from(line: &str) -> Option<Self> {
         // Parse line
         let regex = Regex::split_simple(
@@ -14,12 +16,10 @@ impl List {
             RegexMatchFlags::DEFAULT,
         );
 
-        // Detect value
-        let value = regex.get(1)?.trim();
+        // Extract formatted value
+        let value = regex.get(1)?.trim().to_string();
 
         // Result
-        Some(Self {
-            value: String::from(value),
-        })
+        Some(Self { value })
     }
 }