Documentation unclear

[Frooastside]

At those lines both "this is" and "can be" is written down

wasi-keyvalue/wit/store.wit

Lines 105 to 106 in fb6e23d

	/// returns a list of keys. Please note that for most KeyValue implementations, this is a
	/// can be a very expensive operation and so it should be used judiciously. Implementations

I probably would write it like this

Please note that for most KeyValue implementations, this is a can be a very expensive operation and so it should be used judiciously.