Fixed small typo

lbmpy/methods/creationfunctions.py

@@ -55,7 +55,7 @@ def create_with_discrete_maxwellian_eq_moments(stencil, moment_to_relaxation_rat
         c_s_sq: Speed of sound squared
         central_moment_space: If set to True and instance of
         `lbmpy.methods.momentbased.centralmomentbasedmethod.CentralMomentBasedLbMethod` is returned.
-        Thus the collision will be performend in the central moment space.
+        Thus the collision will be performed in the central moment space.
         central_moment_transform_class: class to transform PDFs to the central moment space.
 
     Returns: