[api/logging] Fix backtrace formatting for errors
[api/logging] Fix backtrace formatting for errors

'\r\n' to "\r\n" so the characters are in fact escaped.

boyang-li/oboe-ruby,appneta/ruby-traceview,boyang-li/oboe-ruby,tlunter/oboe-ruby,appneta/ruby-traceview,tlunter/oboe-ruby,tlunter/oboe-ruby,appneta/ruby-traceview,tlunter/oboe-ruby,appneta/ruby-traceview,boyang-li/oboe-ruby,boyang-li/oboe-ruby