BUG: fix symop list for sg1008 B11m

Crosschecked with cctbx.spacegroup and COD entries.
This makes sg1008 different from standard setting sg8 Cm.

Author: pavoljuhas

src/diffpy/structure/mmlibspacegroups.py

@@ -7231,9 +7231,9 @@
     pdb_name                = "B 1 1 m",
     symop_list = [
         SymOp(Rot_X_Y_Z,     Tr_0_0_0),
-        SymOp(Rot_X_mY_Z,    Tr_0_0_0),
-        SymOp(Rot_X_Y_Z,     Tr_12_12_0),
-        SymOp(Rot_X_mY_Z,    Tr_12_12_0)])
+        SymOp(Rot_X_Y_mZ,    Tr_0_0_0),
+        SymOp(Rot_X_Y_Z,     Tr_12_0_12),
+        SymOp(Rot_X_Y_mZ,    Tr_12_0_12)])
 
 sg1009 = SpaceGroup(
     number                  = 1009,