Fix check_format.sh script when the PR's destination branch is not develop.
Fix check_format.sh script when the PR's destination branch is not develop.

besser82/shogun,sorig/shogun,shogun-toolbox/shogun,lambday/shogun,lisitsyn/shogun,lisitsyn/shogun,geektoni/shogun,karlnapf/shogun,lisitsyn/shogun,besser82/shogun,sorig/shogun,karlnapf/shogun,karlnapf/shogun,lambday/shogun,lambday/shogun,sorig/shogun,karlnapf/shogun,shogun-toolbox/shogun,lambday/shogun,karlnapf/shogun,lambday/shogun,karlnapf/shogun,besser82/shogun,lambday/shogun,besser82/shogun,geektoni/shogun,sorig/shogun,geektoni/shogun,shogun-toolbox/shogun,lisitsyn/shogun,shogun-toolbox/shogun,geektoni/shogun,besser82/shogun,shogun-toolbox/shogun,geektoni/shogun,sorig/shogun,geektoni/shogun,sorig/shogun,besser82/shogun,lisitsyn/shogun,lisitsyn/shogun,shogun-toolbox/shogun