Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: billf

src/semver.rs

@@ -106,6 +106,23 @@ impl<T> VersionMap<T> {
     }
 
     /// Gets a value by version or returns the latest version if no specific version is provided.
+    ///
+    /// # Examples
+    ///
+    /// ```rust
+    /// use semver::Version;
+    /// # use wac_trampoline::semver::VersionMap;
+    ///
+    /// let mut map = VersionMap::new();
+    /// map.insert(Version::new(1, 0, 0), "v1.0.0");
+    /// map.insert(Version::new(1, 2, 0), "v1.2.0");
+    ///
+    /// // Get a specific version
+    /// assert_eq!(map.get_or_latest(Some(&Version::new(1, 0, 0))), Some(&"v1.0.0"));
+    ///
+    /// // Get the latest version
+    /// assert_eq!(map.get_or_latest(None), Some(&"v1.2.0"));
+    /// ```
     pub fn get_or_latest(&self, version: Option<&Version>) -> Option<&T> {
         match version {
             Some(v) => self.get(v),