doc: modify ASF and remove meaningless CLA

[KeeProMise]

1.Discussion is also split into discussion_status and discussion_comment, the former sends dev and the latter sends issues, so as to avoid the disturbance of a dev email for each comment and affect the effectiveness of everyone's subscription.
2.There is an obsolete and unnecessary CLA signature in our contribution doc, just remove it

[imbajin]

LGTM

[codecov]

Codecov Report

Merging #2237 (5a4f1d1) into master (5227248) will decrease coverage by 4.14%.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #2237 +/- ## ============================================ - Coverage 68.52% 64.39% -4.14%  + Complexity 977 676 -301  ============================================ Files 498 498 Lines 40682 40682 Branches 5681 5681 ============================================ - Hits 27879 26197 -1682  - Misses 10097 11859 +1762  + Partials 2706 2626 -80 

see 79 files with indirect coverage changes

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[imbajin]

sync 3rd party doc section from website

[KeeProMise]

sync 3rd party doc section from website

I have submitted the newly added documents to my warehouse yesterday, why is the pr not updated here?
https://github.com/KeeProMise/incubator-hugegraph/tree/ASF_CLA

[KeeProMise]

sync 3rd party doc section from website

KeeProMise@c7a869a

[imbajin]

sync 3rd party doc section from website

I have submitted the newly added documents to my warehouse yesterday, why is the pr not updated here?
https://github.com/KeeProMise/incubator-hugegraph/tree/ASF_CLA

try to submit an empty commit？
（or ask gpt）

[KeeProMise]

sync 3rd party doc section from website

I have submitted the newly added documents to my warehouse yesterday, why is the pr not updated here?
https://github.com/KeeProMise/incubator-hugegraph/tree/ASF_CLA

try to submit an empty commit？ （or ask gpt）

should be ok

[javeme]

LGTM