fix: check-line-endings command of Makefile (#499)

Fix:
- update the command to search script file in `.` instead of `scripts/`
folder to avoid returning an error.

---------

Signed-off-by: Junjie Gao <junjiegao@microsoft.com>
Signed-off-by: Patrick Zheng <patrickzheng@microsoft.com>
Co-authored-by: Patrick Zheng <patrickzheng@microsoft.com>

Author: JeyJeyGao

Makefile

@@ -29,7 +29,7 @@ clean:
 .PHONY: check-line-endings
 check-line-endings: ## check line endings
 	! find . -name "*.go" -type f -exec file "{}" ";" | grep CRLF
-	! find scripts -name "*.sh" -type f -exec file "{}" ";" | grep CRLF
+	! find . -name "*.sh" -type f -exec file "{}" ";" | grep CRLF
 
 .PHONY: fix-line-endings
 fix-line-endings: ## fix line endings