CI/travis/lib.sh: fix dangling quote in symlink command
CI/travis/lib.sh: fix dangling quote in symlink command

This seems to have slipped through after doing a few rebases.
I've fixed it a few times on local branches.

The SFTP script did not error out, so that's why it wasn't caught there.

Signed-off-by: Alexandru Ardelean <685557f6b7c225d86b536740313ed51b24843a58@analog.com>

analogdevicesinc/libiio,analogdevicesinc/libiio,analogdevicesinc/libiio,analogdevicesinc/libiio