Rollup merge of #132398 - krtab:add_doc_link, r=Noratrieb

Add a couple of intra-doc links to str

Author: matthiaskrgr

library/core/src/str/mod.rs

@@ -212,14 +212,16 @@ impl str {
 }
 }
 
-/// Finds the closest `x` not exceeding `index` where `is_char_boundary(x)` is `true`.
+/// Finds the closest `x` not exceeding `index` where [`is_char_boundary(x)`] is `true`.
 ///
 /// This method can help you truncate a string so that it's still valid UTF-8, but doesn't
 /// exceed a given number of bytes. Note that this is done purely at the character level
 /// and can still visually split graphemes, even though the underlying characters aren't
 /// split. For example, the emoji 🧑‍🔬 (scientist) could be split so that the string only
 /// includes 🧑 (person) instead.
 ///
+/// [`is_char_boundary(x)`]: Self::is_char_boundary
+///
 /// # Examples
 ///
 /// ```
@@ -248,15 +250,15 @@ impl str {
 }
 }
 
-/// Finds the closest `x` not below `index` where `is_char_boundary(x)` is `true`.
+/// Finds the closest `x` not below `index` where [`is_char_boundary(x)`] is `true`.
 ///
 /// If `index` is greater than the length of the string, this returns the length of the string.
 ///
 /// This method is the natural complement to [`floor_char_boundary`]. See that method
 /// for more details.
 ///
 /// [`floor_char_boundary`]: str::floor_char_boundary
-///
+/// [`is_char_boundary(x)`]: Self::is_char_boundary
 ///
 /// # Examples
 ///
@@ -2192,7 +2194,7 @@ impl str {
 /// Returns a string slice with the prefix removed.
 ///
 /// 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.
+/// wrapped in `Some`. Unlike [`trim_start_matches`], this method removes the prefix exactly once.
 ///
 /// If the string does not start with `prefix`, returns `None`.
 ///
@@ -2201,6 +2203,7 @@ impl str {
 ///
 /// [`char`]: prim@char
 /// [pattern]: self::pattern
+/// [`trim_start_matches`]: Self::trim_start_matches
 ///
 /// # Examples
 ///
@@ -2219,7 +2222,7 @@ impl str {
 /// Returns a string slice with the suffix removed.
 ///
 /// If the string ends with the pattern `suffix`, returns the substring before the suffix,
-/// wrapped in `Some`. Unlike `trim_end_matches`, this method removes the suffix exactly once.
+/// wrapped in `Some`. Unlike [`trim_end_matches`], this method removes the suffix exactly once.
 ///
 /// If the string does not end with `suffix`, returns `None`.
 ///
@@ -2228,6 +2231,7 @@ impl str {
 ///
 /// [`char`]: prim@char
 /// [pattern]: self::pattern
+/// [`trim_end_matches`]: Self::trim_end_matches
 ///
 /// # Examples
 ///