[doc] Added note about scope of changelog.
[doc] Added note about scope of changelog.

sammuelyee/validator,validator/validator,sammuelyee/validator,tripu/validator,YOTOV-LIMITED/validator,validator/validator,takenspc/validator,validator/validator,validator/validator,takenspc/validator,YOTOV-LIMITED/validator,validator/validator,YOTOV-LIMITED/validator,tripu/validator,takenspc/validator,sammuelyee/validator,sammuelyee/validator,takenspc/validator,YOTOV-LIMITED/validator,sammuelyee/validator,YOTOV-LIMITED/validator,tripu/validator,tripu/validator,tripu/validator,takenspc/validator