message: adapt ISSUE_TEMPLATE to Peercoin
diff: -<!-- This issue tracker is only for technical issues related to Bitcoin Core.
  +<!-- This issue tracker is only for technical issues related to reference implementation of the Peercoin.
  -General bitcoin questions and/or support requests are best directed to the Bitcoin StackExchange at https://bitcoin.stackexchange.com.
  -
  -For reporting security issues, please read instructions at https://bitcoincore.org/en/contact/.
  -
  -If the node is "stuck" during sync or giving "block checksum mismatch" errors, please ensure your hardware is stable by running memtest and observe CPU temperature with a load-test tool such as linpack before creating an issue! -->
  +General Peercoin questions and/or support requests are best directed to the Peercoin Forum: https://talk.peercoin.net/.
  <!-- Describe the issue -->
  <!--- What behavior did you expect? -->
  @@ -13,9 +9,8 @@ If the node is "stuck" during sync or giving "block checksum mismatch" errors, p
  <!--- How reliably can you reproduce the issue, what are the steps to do so? -->
  -<!-- What version of Bitcoin Core are you using, where did you get it (website, self-compiled, etc)? -->
  -
  -<!-- What type of machine are you observing the error on (OS/CPU and disk type)? -->
  +<!-- What version of Peercoin are you using, where did you get it (website, self-compiled, etc)? Which OS do you use, on which platform? -->
  <!-- Any extra information that might be useful in the debugging process. -->
  +
  <!--- This is normally the contents of a `debug.log` or `config.log` file. Raw text or a link to a pastebin type site are preferred. -->
  