docs: staking param link fix

[tac0turtle]

Description

Closes: #XXXX

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[julienrbrt]

I don't understand the relation with the PR title and this fix 😅
If we modify that, can you update the ToC link too?

[tac0turtle]

the toc was pointing to parameters, but the title was params so the link wasn't working. this fixed it

[julienrbrt]

Wdym, the toc was pointing to params: https://github.com/cosmos/cosmos-sdk/pull/13745/files/30648a50f82b41932fcdf67121e2223d08bcdff6#diff-8cae4b5d28bad715411b21d035d60df66c05405a5b166c24b1eb5000998e16d6R26, now it is broken -> https://docs.cosmos.network/main/modules/staking

[julienrbrt]

Reverting this in another doc PR then: a428f39

[tac0turtle]

please don't revert it works now