[SPARK-3722][Docs]minor improvement and fix in docs

https://issues.apache.org/jira/browse/SPARK-3722

Author: WangTao <barneystinson@aliyun.com>

Closes #2579 from WangTaoTheTonic/docsWork and squashes the following commits:

6f91cec [WangTao] use more wording express
29d22fa [WangTao] delete the specified version link
34cb4ea [WangTao] Update running-on-yarn.md
4ee1a26 [WangTao] minor improvement and fix in docs
SPARK-4375 take 2
Update doc
Enable -Dscala-2.11 in sbt