parity efforts: initial go doc PR (#147)

* parity efforts: initial go doc PR

* addressed review comments

* added EC2 resource detector example and README link

* Update src/docs/getting-started/go-sdk/trace-manual-instr.mdx

Co-authored-by: William Armiros <[email protected]>

* Update src/docs/getting-started/go-sdk/trace-manual-instr.mdx

Co-authored-by: William Armiros <[email protected]>

Co-authored-by: William Armiros <[email protected]>

Author: bhautikpip