Fix typo in MarchingSquares.json (#1578)

Update MarchingSquares.json

Author: Bouh

extensions/reviewed/MarchingSquares.json

@@ -2297,7 +2297,7 @@
           "functionType": "Action",
           "group": "Field painting",
           "name": "AddLine",
-          "sentence": "Add a line to the field of _PARAM0_ fom _PARAM2_ ; _PARAM3_ to _PARAM4_ ; _PARAM5_ with thickness: _PARAM6_ using: _PARAM8_",
+          "sentence": "Add a line to the field of _PARAM0_ from _PARAM2_ ; _PARAM3_ to _PARAM4_ ; _PARAM5_ with thickness: _PARAM6_ using: _PARAM8_",
           "events": [
             {
               "type": "BuiltinCommonInstructions::JsCode",
@@ -2380,7 +2380,7 @@
           "functionType": "Action",
           "group": "Field painting",
           "name": "MaskLine",
-          "sentence": "Mask a line on the field of _PARAM0_ fom _PARAM2_ ; _PARAM3_ to _PARAM4_ ; _PARAM5_ with thickness: _PARAM6_",
+          "sentence": "Mask a line on the field of _PARAM0_ from _PARAM2_ ; _PARAM3_ to _PARAM4_ ; _PARAM5_ with thickness: _PARAM6_",
           "events": [
             {
               "type": "BuiltinCommonInstructions::JsCode",