fix: replace all the hyphen to underscore in ModRelativePath

[zong-zhe]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

closes #513

2. What is the scope of this PR (e.g. component or file name):

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

[coveralls]

Pull Request Test Coverage Report for Build 11813543869

Details

• 12 of 32 (37.5%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 42.509%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/client/run.go	12	14	85.71%
pkg/utils/utils.go	0	18	0.0%

Totals
Change from base Build 11812932471:	0.02%
Covered Lines:	4029
Relevant Lines:	9478

---

💛 - Coveralls

[Peefy]

LGTM