Don't try to overwrite project() in docs.cmake

Apparently you can't overwrite project() even in script mode.

Author: friendlyanon

cmake-init/templates/common/cmake/docs.cmake

@@ -12,7 +12,7 @@ if(DEFINED CMAKE_SCRIPT_MODE_FILE)
   endif()
   set(PROJECT_SOURCE_DIR "${CMAKE_SOURCE_DIR}")
 
-  macro(project name)
+  macro(_project name)
     set(args VERSION DESCRIPTION LANGUAGES HOMEPAGE_URL)
     cmake_parse_arguments(PROJECT "" "${args}" "" ${ARGN})
     set(PROJECT_NAME "${name}" PARENT_SCOPE)
@@ -22,8 +22,12 @@ if(DEFINED CMAKE_SCRIPT_MODE_FILE)
     return()
   endmacro()
 
+  file(READ CMakeLists.txt lists_content)
+  string(REPLACE "\nproject(" "\n_project(" lists_content "${lists_content}")
+  file(WRITE "${PROJECT_BINARY_DIR}/docs/lists.txt" "${lists_content}")
+
   function(project_proxy)
-    include(CMakeLists.txt)
+    include("${PROJECT_BINARY_DIR}/docs/lists.txt")
   endfunction()
   project_proxy()
 endif()