expand 'mbe'

src/decl-macros/patterns/internal-rules.md

@@ -17,7 +17,7 @@ macro_rules! foo {
 
 Internal rules can be used to unify multiple `macro_rules!` macros into one, or to make it easier to read and write [TT Munchers] by explicitly naming what rule you wish to call in a macro.
 
-So why is it useful to unify multiple mbe macros into one?
+So why is it useful to unify multiple macros-by-example into one?
 The main reasoning for this is how they are handled in the 2015 Edition of Rust due to `macro_rules!` macros not being namespaced in said edition.
 This gives one the troubles of having to re-export all the internal `macro_rules!` macros as well polluting the global macro namespace or even worse, macro name collisions with other crates.
 In short, it's quite a hassle.