add newline when creating status-go diff link

Otherwise Fugitive plugin in Vim complains about it.

Signed-off-by: Jakub Sokołowski <jakub@status.im>

scripts/hooks/prepare-commit-msg

@@ -16,7 +16,7 @@ COMMIT_MSG_FILE=$1
 # Check if the commit message already contains the link (rebase) and update otherwise insert into line2
 if ! grep -qF "${GITHUB_LINK_PREFIX}" "${COMMIT_MSG_FILE}" >/dev/null; then
   sed -in'' -e "2i\\
-${GITHUB_LINK}\n" "${COMMIT_MSG_FILE}"
+\n${GITHUB_LINK}" "${COMMIT_MSG_FILE}"
 else
   sed -in'' -e "s;^${GITHUB_LINK_PREFIX}.*$;${GITHUB_LINK};" "${COMMIT_MSG_FILE}"
 fi