fix some typos (#4519)

Signed-off-by: battmdpkq <cmaker@163.com>

crates/api_common/src/build_response.rs

@@ -87,7 +87,7 @@ pub async fn build_post_response(
   Ok(Json(PostResponse { post_view }))
 }
 
-// TODO: this function is a mess and should be split up to handle email seperately
+// TODO: this function is a mess and should be split up to handle email separately
 #[tracing::instrument(skip_all)]
 pub async fn send_local_notifs(
   mentions: Vec<MentionData>,

crates/apub/src/http/community.rs

@@ -72,7 +72,7 @@ pub(crate) async fn get_apub_community_followers(
 }
 
 /// Returns the community outbox, which is populated by a maximum of 20 posts (but no other
-/// activites like votes or comments).
+/// activities like votes or comments).
 pub(crate) async fn get_apub_community_outbox(
   info: web::Path<CommunityQuery>,
   context: Data<LemmyContext>,

crates/db_schema/src/source/mod.rs

@@ -44,6 +44,6 @@ pub mod tagline;
 /// value is not sent by Lemmy. Necessary for crates which rely on Rust API such as lemmy-stats-crawler.
 fn placeholder_apub_url() -> DbUrl {
   DbUrl(Box::new(
-    Url::parse("http://example.com").expect("parse placeholer url"),
+    Url::parse("http://example.com").expect("parse placeholder url"),
   ))
 }

crates/utils/src/rate_limit/rate_limiter.rs

@@ -212,7 +212,7 @@ impl<C: Default> RateLimitedGroup<C> {
     now: InstantSecs,
     config: BucketConfig,
   ) -> bool {
-    #[allow(clippy::indexing_slicing)] // `EnumMap` has no `get` funciton
+    #[allow(clippy::indexing_slicing)] // `EnumMap` has no `get` function
     let bucket = &mut self.total[action_type];
 
     let new_bucket = bucket.update(now, config);

crates/utils/src/utils/validation.rs

@@ -204,7 +204,7 @@ pub fn site_description_length_check(description: &str) -> LemmyResult<()> {
   )
 }
 
-/// Check minumum and maximum length of input string. If the string is too short or too long, the
+/// Check minimum and maximum length of input string. If the string is too short or too long, the
 /// corresponding error is returned.
 ///
 /// HTML frontends specify maximum input length using `maxlength` attribute.