Adjust the python name (python3 is python) for Windows in the workaround...

Adjust the python name (python3 is python) for Windows in the workaround needed in case no python has been set (when BUILD_WRAPPER_PYTHON=OFF).

gen_doc/CMakeLists.txt

@@ -58,12 +58,15 @@ if(BUILD_DOCUMENTATION)
 				add_dependencies(doc PREPARE_MATFAUST_FOR_DOXYDOC)
 			endif()
 		endif()
-		#list(GET <list> <element index> [<index> ...] <out-var>)
 		list(GET PYTHON_EXES -1 PY3_EXE)
 		set(GLOB_PATTS "'${PROJECT_BINARY_DIR}/doc/html/namespacepyfaust_*.html';'${PROJECT_BINARY_DIR}/doc/html/namespacematfaust_*.html'")
 		if(NOT PY3_EXE)
 			# workaround in case BUILD_WRAPPER_PYTHON is OFF which implies PY3_EXE is not set
-			set(PY3_EXE python3)
+			if(WIN32)
+				set(PY3_EXE python)
+			else()
+				set(PY3_EXE python3)
+			endif()
 		endif()
 		add_custom_target(doc_exclu_class_filtering ALL ${PY3_EXE}
 			${PROJECT_BINARY_DIR}/doc/filterout_excluded_classes.py ${GLOB_PATTS} DEPENDS doc WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/doc COMMENT "Filter out the non-documented classes")