feat: remove markdown build helpers

src/routes/blog/rust_stack_jmp.mdx

@@ -48,7 +48,7 @@ Here is the code in its entirely, I'd recommend you run this on the [Rust Playgr
 
 Note that you have to manually stop the process.
 
-```rust lang="rust" file="stack_swap.rs"
+```rust file="stack_swap.rs"
 use core::arch::asm;
 
 // stack size of 48 bytes so its easy to print the stack before we switch contexts