Typos in "membership" plugin admin area and manual

Found two typos you can update for your next release. First one is in Subscription Plan section of Admin area. In the first sentence, subscription is mistakenly spelled with two u's (suubscription).

In the manual, page 8, first paragraph, third sentence, the word "the" is accidentally omitted just before the word "word."

I don't mean to be anal - I just appreciate it when people show me typos in my documentation so I can fix them for the next release. Plus, it makes me feel good knowing people are actually reading the stuff :slight_smile: