Reliable-state-machines-(concept).md

@@ -19,7 +19,7 @@ The basic hexabus packet header after this addition then looks like this:
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 ```
 The `HX0D` prefix field, the `type` field and the `flags` field retain their original meaning. While the original packet format did not define any flags, the new format defines one flag:
-```
+```text
 WANT_ACK (0x01): sending node requires acknowledgement from recipients in any case
 WANT_UL_ACK (0x02): upper layer decides if there is an ACK to be sent, e.g. if the packet is relevant for the state machine.
 ```