Merge pull request #19996 from th0114nd/boolean-inden

Boolean literals are not Number literals

Reviewed-by: brson

Author: bors

src/doc/reference.md

@@ -518,7 +518,7 @@ This last example is different because it is not possible to use the suffix
 syntax with a floating point literal ending in a period. `2.f64` would attempt
 to call a method named `f64` on `2`.
 
-##### Boolean literals
+#### Boolean literals
 
 The two values of the boolean type are written `true` and `false`.