Update limits.mdx

[1000hz]

Summary

The WfP Limits page incorrectly refers to caches.default as a method call rather than a property.

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[irvinebroque]

ty!

[angelampcosta]

@1000hz can I merge the PR?

[1000hz]

@angelampcosta yes, please go ahead and merge when ready. I just pushed another commit which fixes another occurrence of the same error and verified there are no others.

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