diff --git a/library/core/src/str/mod.rs b/library/core/src/str/mod.rs
index e11d13f8bed16..f965a50058b1b 100644
--- a/library/core/src/str/mod.rs
+++ b/library/core/src/str/mod.rs
@@ -2192,8 +2192,8 @@ impl str {
 
     /// Returns a string slice with the prefix removed.
     ///
-    /// If the string starts with the pattern `prefix`, returns substring after the prefix, wrapped
-    /// in `Some`.  Unlike `trim_start_matches`, this method removes the prefix exactly once.
+    /// If the string starts with the pattern `prefix`, returns the substring after the prefix,
+    /// wrapped in `Some`. Unlike `trim_start_matches`, this method removes the prefix exactly once.
     ///
     /// If the string does not start with `prefix`, returns `None`.
     ///