nongnu: packages: mozilla: Fix typos in the comments.
According to the thefreedictionary.com, `therefor' can have the following meanings:
adv.
For that: ordering goods and enclosing payment therefor.
adv
(Law) archaic for this, that, or it: he will be richer therefor.
adv.
for or in exchange for that or this; for it: a refund therefor.
None of that seems to fit that well into the sentence in the comment. However when I take a look at definitions of `therefore', it seems to fit much better:
adv.
For that reason or cause; consequently or hence.
adv.
in consequence of that; as a result.
Thus I believe this is just a typo and this commit fixes it.
- nongnu/packages/mozilla.scm (%firefox-esr-build-id, %firefox-build-id): Fix typos in the comments.