Fixed typos
Fixed typos

Fixed typos noted by Matt D in https://atlassian.kbase.us/browse/KBASE-4150 and also some improved some wording and punctuation.
cshenry/fba_tools,cshenry/fba_tools,cshenry/fba_tools,cshenry/fba_tools,cshenry/fba_tools,cshenry/fba_tools,cshenry/fba_tools,cshenry/fba_tools,cshenry/fba_tools