### What this PR does / why we need it?
After removing codepsell a while, we discovered that typo had a problem
correctly recognizing certain misspelled words, so I suggested adding it
back.
- vLLM version: v0.14.1
- vLLM main:
d68209402d
---------
Signed-off-by: wangli <wangli858794774@gmail.com>
Add an example for user stories and fix some typo
Add a new section, user story in the docs, to collect user stories of
llvm-ascend, also add an example and the issue template to collect user
story
Signed-off-by: Zhenyu Zheng <zheng.zhenyu@outlook.com>