Update Truncate doc with compress behaviour (#1217)
Update Truncate doc with compress behaviour (#1217)

* Update Truncate doc with compress behaviour

This is a documentation update to highlight the behaviour of Truncate, which will reset dns.Compress to false when the message fits in the requested size without truncation, and make it the caller responsibility to set it back to true if they wish to compress, regardless of fitting, uncompressed, in the requested message size in the first place or not.
Fixes #1216

* address comments

* d/Note that/
* s/reset/set/
* s/caller/caller's/
* removed backticks

* regardless of size
miekg/dns