### What changes were proposed in this pull request?
Improve Celeborn document to fix typos, table formats and wrong description of document. Meanwhile, `deploy.md` adds the document of MapReduce client deployment.
### Why are the changes needed?
There are some typos and format fixes in Celeborn document at present. Meanwhile, the `deploy.md` does not contain the deployment of MapReduce client, which is inconsistent with `README.md` for Flink configuration.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
No.
Closes#2407 from SteNicholas/CELEBORN-1341.
Authored-by: SteNicholas <programgeek@163.com>
Signed-off-by: mingji <fengmingxiao.fmx@alibaba-inc.com>
### What changes were proposed in this pull request?
As title.
### Why are the changes needed?
As title.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Manual test.
Closes#1778 from waitinfuture/860-1.
Lead-authored-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
Co-authored-by: Keyong Zhou <waitinfuture@gmail.com>
Signed-off-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
### What changes were proposed in this pull request?
As title.
### Why are the changes needed?
As title.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Manual test.
Closes#1769 from waitinfuture/834.
Authored-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
Signed-off-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
### What changes were proposed in this pull request?
As title.
### Why are the changes needed?
As title.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Manual test.
Closes#1772 from waitinfuture/849.
Lead-authored-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
Co-authored-by: Keyong Zhou <waitinfuture@gmail.com>
Signed-off-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
### What changes were proposed in this pull request?
As title.
### Why are the changes needed?
As title.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
No.
Closes#1752 from waitinfuture/826.
Authored-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
Signed-off-by: zky.zhoukeyong <zky.zhoukeyong@alibaba-inc.com>
