message: Fix link to MacOS build guide
diff: @@ -68,7 +68,7 @@ See [wrapper iOS install documentation](wrappers/ios/README.md "How to install")
  ### MacOS
  -Pre-built libraries are not provided for MacOS. Please look [here](blob/master/doc/mac-build.md)
  +Pre-built libraries are not provided for MacOS. Please look [here](doc/mac-build.md)
  for details on building from source for MacOS.
  After building `libindy`, add the path containing the library the `LD_LIBRARY_PATH` and
  