Use less alarming wording in warnings about 6 being work in progress

Description

In particular in the documentation: with the Beta1, we can reasonably say Search 6 is ready for production; it's just more likely to introduce backward-incompatible changes.

Environment

None

Status

Assignee

Yoann Rodière

Reporter

Yoann Rodière

Labels

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Suitable for new contributors

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Feedback Requested

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Fix versions

Priority

Major
Configure