gstlal_inspiral_plot_svd_bank: add documentation

gstlal-inspiral/bin/gstlal_inspiral_plot_svd_bank

@@ -16,6 +16,9 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
+## @file
+# A program to plot the contents of a gstlal_svd_bank file by reconstructing the waveforms
+
 import os
 import sys
 import copy