create-a-dynamic-series-chart : contents are so obsolete

[KKamishima]

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Page link: create-a-dynamic-series-chart

Document link: charts-dynamic-series.md

My Issue/Suggestion

It looks like this page hasn't been updated in a long time.

Even the phrase "Dynamic Series" in its title was replaced with "Multiple Series" in the March 2022 commit. Other changes include tab names and property group names.
mendix/web-widgets@c2ff2fb#diff-d7e8a369808723cba56d409d81bc337f4620bc692e3bf8986ad2ef9699cce1dc

Please update it to match the latest version.