Adjust the README file in cater with users#2440

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Electronic-Waste wants to merge 8 commits intokubeflow:masterfrom Electronic-Waste:doc/update-readme

+22-5

Commits on Feb 16, 2025

chore(doc): update alpha description in overview & update get-started chapter.
Electronic-Waste
committed
chore(doc): add training operator v1 description in overview.
Electronic-Waste
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chore(doc): update the description in Kubeflow Training Operator V1.
Electronic-Waste
committed