Add RepositoryConfig doc comments

Author: Sakib25800

src/config.rs

@@ -12,15 +12,24 @@ pub const CONFIG_FILE_PATH: &str = "rust-bors.toml";
 /// file located in the root of the repository file tree.
 #[derive(serde::Deserialize, Debug)]
 pub struct RepositoryConfig {
+    /// Maximum duration (in seconds) to wait for CI checks to complete before timing out.
+    /// Defaults to 3600 seconds (1 hour).
     #[serde(
         default = "default_timeout",
         deserialize_with = "deserialize_duration_from_secs"
     )]
     pub timeout: Duration,
+    /// Label modifications to apply when specific events occur.
+    /// Maps trigger events (approve, try, etc.) to label additions/removals.
+    /// Format: `trigger = ["+label_to_add", "-label_to_remove"]`
     #[serde(default, deserialize_with = "deserialize_labels")]
     pub labels: HashMap<LabelTrigger, Vec<LabelModification>>,
+    /// Minimum time (in seconds) to wait for CI checks to complete before proceeding.
+    /// Defaults to `None` (no minimum wait time).
     #[serde(default, deserialize_with = "deserialize_duration_from_secs_opt")]
     pub min_ci_time: Option<Duration>,
+    /// Whether auto merging is enabled.
+    /// Defaults to false.
     #[serde(default)]
     pub merge_queue_enabled: bool,
 }