chore: fix typos

src/codegen/encoding/scale_encoding.rs

@@ -445,7 +445,7 @@ impl AbiEncoding for ScaleEncoding {
         // `codegen::abi_encode()` also returns the actual encoded size,
         // so slightly overestimating it shouldn't  matter.
         // However, the actual length of the encoded data produced by `codegen::abi_encode()`
-        // is ignored in some places, wich results in buggy contracts if we have not an exact estimate.
+        // is ignored in some places, which results in buggy contracts if we have not an exact estimate.
         // Once this is fixed (the encoded size return by `codegen::abi_encode()` must never be ignored),
         // this can just be always 4 bytes .
         encode_compact(size, None, None, vartab, cfg)

src/codegen/undefined_variable.rs

@@ -72,7 +72,7 @@ pub fn check_variables_in_expression(
     instr.recurse_expressions(&mut params, find_undefined_variables_in_expression);
 }
 
-/// Auxiliar function for expression.recurse. It checks if a variable is read before being defined
+/// Auxiliary function for expression.recurse. It checks if a variable is read before being defined
 pub fn find_undefined_variables_in_expression(
     exp: &Expression,
     ctx: &mut FindUndefinedVariablesParams,