docs/recipes-multiprocessing.rst: clarified info about no multithreading.

Author: julian-smith-artifex-com

docs/recipes-multiprocessing.rst

@@ -16,11 +16,7 @@
 Multiprocessing
 ==============================
 
-:title:`MuPDF` has no integrated support for threading - calling itself "thread-agnostic". While there do exist tricky possibilities to still use threading with :title:`MuPDF`, the baseline consequence for |PyMuPDF| is:
-
-**No Python threading support**.
-
-Using |PyMuPDF| in a :title:`Python` threading environment will lead to blocking effects for the main thread.
+|PyMuPDF| does not support running on multiple threads - doing so may cause incorrect behaviour or even crash Python itself.
 
 However, there is the option to use :title:`Python's` *multiprocessing* module in a variety of ways.