Update PoldiDataAnalysis-v1.rst

docs/source/algorithms/PoldiDataAnalysis-v1.rst

@@ -61,7 +61,7 @@ The algorithm requires relatively little input and can be run like this:
     cell_a = np.round(cell.cell(0, 1), 5)
     cell_a_error = np.round(cell.cell(0, 2), 5)
 
-    print("Refined lattice parameter a = {:.5} +/- {}".format(cell_a, cell_a_error))
+    print("Refined lattice parameter a = {:.5f} +/- {}".format(cell_a, cell_a_error))
 
 This will print the following output: