Resolved OpenBMC CI Build failure

- OpenBMC CI Build was failing due to empty line
 in Contributing.md.
- Observed this issue in these commits:
  1. https://gerrit.openbmc.org/c/openbmc/webui-vue/+/71290
  2. https://gerrit.openbmc.org/c/openbmc/webui-vue/+/82541
  3. https://gerrit.openbmc.org/c/openbmc/webui-vue/+/82616

Signed-off-by: Nikhil Ashoka <[email protected]>
Change-Id: Ibf7a0b8e1df0d2cb8d44a497e8b38cb8a8698e30

Author: Nikhil-Ashoka

CONTRIBUTING.md

@@ -138,7 +138,6 @@ GitHub pull request.
 1. Commit your changes, adding a Signed-off-by line to it:
    `git commit --signoff`
 1. Write a [good commit message](https://chris.beams.io/posts/git-commit/)
-
    - Separate subject from the body with a blank line
    - Limit the subject line to 50 characters
    - Capitalize the subject line