docs: add PPL Timechart Functions report for v3.4.0#1856

tkykenmt merged 1 commit intomaintkykenmt/opensearch-feature-explorer:mainfrom

docs/ppl-timechart-functions-v3.4.0tkykenmt/opensearch-feature-explorer:docs/ppl-timechart-functions-v3.4.0Copy head branch name to clipboard