[gtk: 2/4] docs: Reword gtk4-update-icon-cache description

[Matthias Clasen <matthiasc src gnome org>]

commit 24ce38bb36dd252764794b8c3293e01812df1fd9
Author: Björn Daase <bjoern daase net>
Date:   Fri Aug 21 15:33:12 2020 +0200

    docs: Reword gtk4-update-icon-cache description

 docs/reference/gtk/gtk4-update-icon-cache.xml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/docs/reference/gtk/gtk4-update-icon-cache.xml b/docs/reference/gtk/gtk4-update-icon-cache.xml
index 1537963882..769853a57b 100644
--- a/docs/reference/gtk/gtk4-update-icon-cache.xml
+++ b/docs/reference/gtk/gtk4-update-icon-cache.xml
@@ -58,9 +58,9 @@
 <para>
   GTK can use the cache files created by <command>gtk4-update-icon-cache</command>
   to avoid a lot of system call and disk seek overhead when the application
-  starts. Since the format of the cache files allows them to be mmaped
-  shared between multiple applications, the overall memory consumption is
-  reduced as well.
+  starts. Since the format of the cache files allows them to be shared across
+  multiple processes, for instance using the POSIX <command>mmap()</command> system
+  call, the overall memory consumption is reduced as well.
 </para>
 </refsect1>