⚙️ refactor: change & add documentation to the code based on the lints (#205)

src/cache/cacher.rs

@@ -6,11 +6,8 @@ use redis::{Client, Commands, Connection};
 
 /// A named struct which stores the redis Connection url address to which the client will
 /// connect to.
-///
-/// # Fields
-///
-/// * `redis_connection_url` - It stores the redis Connection url address.
 pub struct RedisCache {
+    /// It stores the redis Connection url address.
     connection: Connection,
 }
 

src/cache/mod.rs

@@ -1 +1,4 @@
+//! This module provides the modules which provide the functionality to cache the aggregated
+//! results fetched and aggregated from the upstream search engines in a json format.
+
 pub mod cacher;