Fix typo in environment variable

      -DCMAKE_BUILD_TYPE=Debug

      -DGKFS_BUILD_TESTS:BOOL=ON

      -DGKFS_INSTALL_TESTS:BOOL=ON

      -DGFKS_ENABLE_FORWARDING:BOOL=ON

      -DGFKS_ENABLE_AGIOS:BOOL=ON

      -DGKFS_ENABLE_FORWARDING:BOOL=ON

      -DGKFS_ENABLE_AGIOS:BOOL=ON

      -DRPC_PROTOCOL="ofi+sockets"

      -DCMAKE_PREFIX_PATH=${DEPS_INSTALL_PATH}

      -DCMAKE_INSTALL_PREFIX=${INSTALL_PATH}