Update CMakeLists.txt

Author: sean-parent

CMakeLists.txt

@@ -102,6 +102,7 @@ if(BUILD_DOCS)
         # Set variables for Doxyfile template
         set(PROJECT_NAME "Adobe Source Libraries")
         set(PROJECT_BRIEF "A collection of C++ libraries.")
+        set(PROJECT_VERSION ${PROJECT_VERSION})
         set(INPUT_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
         set(OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}")
         set(AWESOME_CSS_PATH "${AWESOME_CSS_DIR}")