add doc comment to max_concurrent_fetches

Author: 0xNeshi

src/event_scanner/scanner/mod.rs

@@ -29,29 +29,34 @@ pub struct Unspecified;
 pub struct Historic {
     pub(crate) from_block: BlockId,
     pub(crate) to_block: BlockId,
+    /// Controls how many log-fetching RPC requests can run in parallel during the scan.
     pub(crate) max_concurrent_fetches: usize,
 }
 pub struct Live {
     pub(crate) block_confirmations: u64,
+    /// Controls how many log-fetching RPC requests can run in parallel during the scan.
     pub(crate) max_concurrent_fetches: usize,
 }
 pub struct LatestEvents {
     pub(crate) count: usize,
     pub(crate) from_block: BlockId,
     pub(crate) to_block: BlockId,
     pub(crate) block_confirmations: u64,
+    /// Controls how many log-fetching RPC requests can run in parallel during the scan.
     pub(crate) max_concurrent_fetches: usize,
 }
 #[derive(Default)]
 pub struct Synchronize;
 pub struct SyncFromLatestEvents {
     pub(crate) count: usize,
     pub(crate) block_confirmations: u64,
+    /// Controls how many log-fetching RPC requests can run in parallel during the scan.
     pub(crate) max_concurrent_fetches: usize,
 }
 pub struct SyncFromBlock {
     pub(crate) from_block: BlockId,
     pub(crate) block_confirmations: u64,
+    /// Controls how many log-fetching RPC requests can run in parallel during the scan.
     pub(crate) max_concurrent_fetches: usize,
 }