### Summary
`show_env.sh` exists to produce a clean environment report to paste into
an issue. Run outside a work tree it printed a raw git error into the
middle of it.
## Description
This PR fixes a typo in comment text and a missing verb in error output
in `show_env.sh`.
## Details
1. Fixed typo in comment (`lsd_release` $\to$ `lsb_release`).
2. Added missing verb in fallback output string (`It NOT a Git repo`
$\to$ `It is NOT a Git repo`).
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Co-authored-by: ferkans-amir <amir.rezaei@tu-berlin.de>
### What problem does this PR solve?
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Signed-off-by: zhanluxianshen <zhanluxianshen@163.com>
### What problem does this PR solve?
Test cases about dataset
### Type of change
- [x] Other (please describe): test cases
---------
Signed-off-by: jinhai <haijin.chn@gmail.com>
