pull: don't say that merge is "the default strategy"
Git no longer has a default strategy for reconciling divergent branches,
because there's no way for Git to know which strategy is appropriate in
any particular situation.
The initially proposed version in [*], that eventually became
031e2f7a (pull: abort by default when fast-forwarding is not
possible, 2021-07-22), dropped this phrase from the message, but
it was left in the final version by accident.
* https://lore.kernel.org/git/
20210627000855.530985-1-alexhenrie24@gmail.com/
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>