Align project names

[reyang]

https://github.com/open-telemetry/opentelemetry-specification/tree/main/specification#project-naming

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[codecov]

Codecov Report

Merging #847 (1804556) into main (f6671dd) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #847   +/-   ##
=========================================
  Coverage     81.75%   81.75%           
  Complexity     1947     1947           
=========================================
  Files           243      243           
  Lines          5069     5069           
=========================================
  Hits           4144     4144           
  Misses          925      925           

Flag	Coverage Δ
7.4	81.23% <ø> (ø)
8.0	81.75% <ø> (ø)
8.1	81.89% <ø> (ø)

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