Fix docstrings again

Author: TheBlupper

src/sage/matrix/matrix_integer_dense.pyx

@@ -2743,8 +2743,8 @@ cdef class Matrix_integer_dense(Matrix_dense):
     def BKZ(self, delta=None, algorithm="fpLLL", fp=None, block_size=10, prune=0,
             use_givens=False, precision=0, proof=None, **kwds):
         """
-        Run Block Korkin-Zolotarev reduction on ``self`` interpreted
-        as a lattice, and return the result.
+        Return the result of running Block Korkin-Zolotarev reduction on
+        ``self`` interpreted as a lattice.
 
         INPUT: