Update Docs/user_guide/modules/dynamicmodeler.md

Co-authored-by: Andras Lasso <[email protected]>

Docs/user_guide/modules/dynamicmodeler.md

@@ -23,7 +23,7 @@ Click on the Apply button to run the tool once, or check the checkbox on the App
 ## Tools
 
 ### Plane cut
-Extracts a region of the surface by cutting it with one or more markup planes or slice view planes. The `Output model` contains what is on the negative side of the plane(s). If more than one plane is specified, the negative sides of the planes are combined using a union, intersection, or difference operation. The part that of the `input model` that is not included in the `output model` is stored in the `complement output model`.
+Extracts a region of the surface by cutting it with one or more markup planes or slice view planes. The `Output model` contains what is on the negative side of the plane(s). If more than one plane is specified, the negative sides of the planes are combined using a union, intersection, or difference operation. The part of the `input model` that is not included in the `output model` is stored in the `complement output model`.
 #### Input nodes
 - `Model node`: The surface model to be cut.
 - `Plane node (repeatable)`: The planes used to cut the model.