gh-158798: Use "hashed collections" consistently in object.__hash__ docs

[lazerg]

The second paragraph of object.__hash__ said "hashable collections" and linked "hashable" to the glossary, which describes objects that can be hashed, not containers like set and dict. Use "hashed collections", the term the first paragraph already uses, and drop the glossary link.

• Issue: "hashable collections" in the object.__hash__ documentation is misleading #158798

[read-the-docs-community]

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📚 cpython-previews | 🛠️ Build #34929691 | 📁 Comparing 74ca30b against main (9d22a53)

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± reference/datamodel.html