EVM-C: fix typo in comments
@@ -97,7 +97,7 @@ struct evm_result {
/// In case the evm_result::code field signals
/// a failure the output MAY contain optional explanation of the failure
/// for debugging or tracing purposes. In case the explanation is provided
- /// and contains human-readable text the UTF-8 encoding SHOULD be used.
+ /// and contains human-readable text then UTF-8 encoding SHOULD be used.
///
/// The memory containing the output data is owned by EVM and has to be
/// freed with evm_result::release().
