Mistake in malleability type table for `thresh`

[benma]

The malleability type properties for thresh on the website state:

s=at most k-1 are non-s; e=all are s

for e it should say e=all are e and all are s. The code implements it like this too:

miniscript/bitcoin/script/miniscript.cpp

Line 241 in 484386a

"e"_mst.If(all_e && num_s == n_subs) | // e=all e and all s