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Ali Asghar
c5045485b4
## Description The "Measurements" description in the \`go.opentelemetry.io/otel/metric\` package godoc stated that a Gauge is used when "the most recent measurement needs to be conveyed about an asynchronous measurement" and only listed \`Int64ObservableGauge\` and \`Float64ObservableGauge\`. Synchronous Gauge types (\`Int64Gauge\`, \`Float64Gauge\`) were added to the API but are not reflected in this paragraph. This PR updates the sentence to list all four Gauge types and briefly note the difference (sync records an instantaneous value at a specific point in code; observable samples via a callback once per collection cycle). Partially addresses #4801 (the "explain the differences between instrument types" request) by correcting the Gauge coverage specifically. Happy to follow up with a broader summary-by-example list if @pellared thinks that's still valuable. Fixes #4801. ## Checklist - [x] CHANGELOG.md entry added (placeholder `#XXXX`, will update with real PR number once assigned). - [ ] Tests updated (godoc-only change, no behavior change). --------- Signed-off-by: Ali <alliasgher123@gmail.com> Co-authored-by: Robert Pająk <pellared@hotmail.com> Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>