Add better explanation re evm version

Author: grandizzy

crates/cheatcodes/assets/cheatcodes.json

@@ -609,11 +609,15 @@ interface Vm {
     #[cheatcode(group = Evm, safety = Unsafe)]
     function coolSlot(address target, bytes32 slot) external;
 
-    /// Returns the execution evm version.
+    /// Returns the test or script execution evm version.
+    ///
+    /// **Note:** The execution evm version is not the same as the compilation one.
     #[cheatcode(group = Evm, safety = Safe)]
     function getEvmVersion() external pure returns (string memory evm);
 
-    /// Set the execution evm version.
+    /// Set the test or script execution evm version.
+    ///
+    /// **Note:** The execution evm version is not the same as the compilation one.
     #[cheatcode(group = Evm, safety = Safe)]
     function setEvmVersion(string calldata evm) external;