doc: update sphinx-build -j auto comment

ChangeLog:

	* doc/Makefile: Update comment.

diff --git a/doc/Makefile b/doc/Makefile
index e08a43ecf2d6b5b0bbf5c640aecf59b6cbad23f5..3a7c4c4da9da2332cf1b67cfbc1bf6c7953198f6 100644 (file)
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -3,7 +3,7 @@
 
 # You can set these variables from the command line.
 
-# Disable parallel reading as it can be very slow on a machine with CPUs:
+# Disable parallel reading as it can be very slow on a machine with many CPUs:
 # https://github.com/sphinx-doc/sphinx/issues/10969
 
 SPHINXOPTS   ?= -q