docs(stackable-operator): Improve docs

Author: NickLarsenNZ

crates/stackable-operator/src/commons/s3/crd.rs

@@ -123,14 +123,13 @@ impl AwsRegion {
     /// Example usage:
     ///
     /// ```
-    /// # fn set_property(key: &str, value: String) {
-    /// # }
-    ///
+    /// # use stackable_operator::commons::s3::AwsRegion;
+    /// # fn set_property(key: &str, value: String) {}
     /// # fn example(aws_region: AwsRegion) {
-    /// aws_region.name().and_then(|region_name| {
+    /// if let Some(region_name) = aws_region.name() {
     ///     // set some propery if the region is set, or is the default.
     ///     set_property("aws.region", region_name);
-    /// });
+    /// };
     /// # }
     /// ```
     pub fn name(self) -> Option<String> {