Fix typo in step-16

diff --git a/examples/step-16/step-16.cc b/examples/step-16/step-16.cc
index 3350d7b6c2bc0c1fb541e58b527af900f4dd569e..c8e997415c23e4444953a98e2305006b01af42eb 100644 (file)
--- a/examples/step-16/step-16.cc
+++ b/examples/step-16/step-16.cc
@@ -273,7 +273,7 @@ namespace Step16
     // complete, inclusive range here (not a starting index and size), so the
     // finest level is <code>n_levels-1</code>. We first have to resize the
     // container holding the SparseMatrix classes, since they have to release
-    // their SparsityPattern before the can be destroyed upon resizing.
+    // their SparsityPattern before they can be destroyed upon resizing.
     const unsigned int n_levels = triangulation.n_levels();
 
     mg_interface_matrices.resize(0, n_levels - 1);