Update TROUBLESHOOTING.txt re: macOS

h/t Mark Kim

docs/CHANGES.txt

@@ -6,7 +6,7 @@ Copyright (c) 2002-2024
 Various contributors (see below, and AUTHORS.txt)
 https://tuxpaint.org/
 
-2024.April.18 (0.9.33)
+2024.April.27 (0.9.33)
   * New Magic Tools:
     ----------------
     * WIP Specular Reflection: Draws a slightly blurred, wavy, and
@@ -71,6 +71,11 @@ https://tuxpaint.org/
       (https://sourceforge.net/p/tuxpaint/tuxpaint/merge-requests/19/)
       Will Thompson <https://sourceforge.net/u/wjjjjt/profile/>
 
+  * Documentation updates:
+    ----------------------
+    * Troubleshooting Guide (TROUBLESHOOTING.txt) updated regarding
+      + macOS (h/t Mark Kim)
+
   * Localization Updates:
     ---------------------
     * Bulgarian translation

docs/TROUBLESHOOTING.txt

@@ -1,6 +1,6 @@
 Troubleshooting Guide for Tux Paint
 
-Last updated: 2023.03.09
+Last updated: 2023.04.27
 
 Questions
 =========
@@ -30,11 +30,15 @@ macOS
  * The version of macOS (e.g., "macOS 13.1 Ventura")
  * The CPU type (e.g., "Intel x86_64", or "Apple Silicon M1")
  * The version of Tux Paint (e.g., 0.9.28-3)
- * Send a copy of the config file, e.g. "tuxpaint.cfg" in
-   $HOME/Library/Application Support/TuxPaint/
- * FIXME -- Current way to grab stderr/stdout output
-   (may need to describe how to get the Terminal app?)
- * FIXME -- Anything else?
+ * Send a copy of the config file(s), e.g. "tuxpaint.cfg" in
+   - /Users/<username>/Library/Application Support/TuxPaint/
+   - /Library/Application Support/TuxPaint/
+ * A debug version of Tux Paint may be available that will
+   record stderr & stdout into /tmp/tuxpaint.log; check with
+   the developers to see if one is available.
+   - /tmp is hidden in macOS, so the user will need to go to
+     [Finder] -> [Go] menu -> [Go to Folder...] menu item,
+     then type in "/tmp" into the dialog box to open up /tmp.
 
 Android
 -------