3 different inaccuracies

https://github.com/AppFlowy-IO/AppFlowy-Docs/blob/b058a9f9a63da5b2afa4b78f2bbb7c9401c5b9f4/essential-documentation/contribute-to-appflowy/appflowy-mentorship-program/mentorship-2022/mentee-projects/table.md?plain=1#L11

### Inaccurate ###
"Appflowy"
### Accurate ###
"AppFlowy"
Proper nouns should be capitalized correctly. "AppFlowy" as an official name should be consistently capitalized. I encountered this capitalization issue often in the documentation but as it coincides with other inaccuracies in this sentence I suggested to fix it. The same thing for GitHub which is not always capitalized consistently.

### Inaccurate ###
"aims implementing"
### Accurate ###
"aims `to` implement"
The verb "aims" should be followed by an infinitive ("to implement") rather than a gerund ("implementing").

### Inaccurate ###
"basic tabular content feature"
### Accurate ###
"`a` basic tabular content feature"
Adding the article "a" makes the sentence grammatically complete and more natural.