Convert #[lang=".."] to #[lang = ".."] for docs too.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/doc/reference.md b/src/doc/reference.md
index e3e542efb6a..16fdcfa3013 100644
--- a/src/doc/reference.md
+++ b/src/doc/reference.md
@@ -2028,7 +2028,7 @@ makes it possible to declare these operations. For example, the `str` module
 in the Rust standard library defines the string equality function:
 
 ```{.ignore}
-#[lang="str_eq"]
+#[lang = "str_eq"]
 pub fn eq_slice(a: &str, b: &str) -> bool {
     // details elided
 }