message: fix formatting in fast filter
diff: @@ -15,7 +15,7 @@ In the BitcoinUnlimited codebase, there exist multiple fast filter implementatio
  ### CVariableFastFilter
  |**Field Name**|**Type**|**Size**|**Purpose**|
  -|:------------:|:------:|:------:|:------------------:|:---------:|
  +|:------------:|:------:|:------:|:---------:|
  |`vData`|`vector<unbsigned char>`|variable|Bit array|
  |`nHashFuncs`|`uint8_t`|1 byte|Number of hash functions to use|
  |`nFilterBytes`|`uint32_t`|4 bytes|Size of `vData` in bytes|
  