Remove ignores

docs/compilation_walkthrough.md

@@ -189,7 +189,7 @@ LLVM_InitializeAllAsmParsers();
 After that we create a LLVM context, and pass it along the module to the
 `mlirTranslateModuleToLLVMIR` method:
 
-```rust ,ignore
+```rust,ignore
 let llvm_module = mlirTranslateModuleToLLVMIR(mlir_module_op, llvm_context);
 ```
 

docs/execution_walkthrough.md

@@ -2,7 +2,7 @@
 
 Given the following Cairo program:
 
-```rust,ignore
+```cairo
 // This is the cairo program. It just adds two numbers together and returns the
 // result in an enum whose variant is selected using the result's parity.
 enum Parity<T> {

docs/gas_builtin_accounting.md

@@ -52,7 +52,7 @@ amount being withdrawn.
 ### Example
 Let's illustrate this with a simple example using the following Cairo 1 code:
 
-```rust,ignore
+```cairo
 fn run_test() {
     let mut i: u8 = 0;
     let mut val = 0;
@@ -174,7 +174,7 @@ called from within the program.
 ### Example
 Let us consider the following Cairo program which uses the `pedersen` builtin:
 
-```rust,ignore
+```cairo
 use core::integer::bitwise;
 use core::pedersen::pedersen;