Remove incorrect "lib" prefixes in CXXSTDLIB doc comments (#1228)

src/lib.rs

@@ -844,8 +844,8 @@ impl Build {
  /// The name of the C++ standard library to link is decided by:
  /// 1. If [`cpp_link_stdlib`](Build::cpp_link_stdlib) is set, use its value.
  /// 2. Else if the `CXXSTDLIB` environment variable is set, use its value.
- /// 3. Else the default is `libc++` for OS X and BSDs, `libc++_shared` for Android,
- /// `None` for MSVC and `libstdc++` for anything else.
+ /// 3. Else the default is `c++` for OS X and BSDs, `c++_shared` for Android,
+ /// `None` for MSVC and `stdc++` for anything else.
  pub fn cpp(&mut self, cpp: bool) -> &mut Build {
  self.cpp = cpp;
  self
@@ -3201,8 +3201,8 @@ impl Build {
  /// Returns the C++ standard library:
  /// 1. If [`cpp_link_stdlib`](cc::Build::cpp_link_stdlib) is set, uses its value.
  /// 2. Else if the `CXXSTDLIB` environment variable is set, uses its value.
- /// 3. Else the default is `libc++` for OS X and BSDs, `libc++_shared` for Android,
- /// `None` for MSVC and `libstdc++` for anything else.
+ /// 3. Else the default is `c++` for OS X and BSDs, `c++_shared` for Android,
+ /// `None` for MSVC and `stdc++` for anything else.
  fn get_cpp_link_stdlib(&self) -> Result<Option<Cow<'_, Path>>, Error> {
  match &self.cpp_link_stdlib {
  Some(s) => Ok(s.as_deref().map(Path::new).map(Cow::Borrowed)),