doc(sdk): Fix tiny typos.

Author: Hywan

crates/matrix-sdk/src/event_cache/linked_chunk/mod.rs

@@ -115,14 +115,14 @@ pub enum Error {
         identifier: ChunkIdentifier,
     },
 
-    /// A chunk is a gap, and it was expected to be an items.
+    /// A chunk is a gap chunk, and it was expected to be an items.
     #[error("The chunk is a gap: `{identifier:?}`")]
     ChunkIsAGap {
         /// The chunk identifier.
         identifier: ChunkIdentifier,
     },
 
-    /// A chunk is an items, and it was expected to be a gap.
+    /// A chunk is an items chunk, and it was expected to be a gap.
     #[error("The chunk is an item: `{identifier:?}`")]
     ChunkIsItems {
         /// The chunk identifier.

crates/matrix-sdk/src/event_cache/linked_chunk/updates.rs

@@ -79,8 +79,8 @@ pub enum Update<Item, Gap> {
     /// The last items of a chunk have been detached, i.e. the chunk has been
     /// truncated.
     DetachLastItems {
-        /// The split position. Before this position (`[..position]`), items are
-        /// kept, from this position (`[position..]`), items are
+        /// The split position. Before this position (`..position`), items are
+        /// kept, from this position (`position..`), items are
         /// detached.
         at: Position,
     },