README.md: tweak the instructions for setting JAVA_HOME

README.md

@@ -110,7 +110,13 @@ Maud was designed for a desktop environment with:
 
 1. Install a 64-bit [Java Development Kit (JDK)][adoptium],
    if you don't already have one.
-2. Point the `JAVA_HOME` environment variable to your JDK installation.
+2. Point the `JAVA_HOME` environment variable to your JDK installation:
+   (In other words, set it to the path of a directory/folder
+   containing a "bin" that contains a Java executable.
+   That path might look something like
+   "C:\Program Files\Eclipse Adoptium\jdk-17.0.3.7-hotspot"
+   or "/usr/lib/jvm/java-17-openjdk-amd64/" or
+   "/Library/Java/JavaVirtualMachines/zulu-17.jdk/Contents/Home" .)
   + using Bash or Zsh: `export JAVA_HOME="` *path to installation* `"`
   + using [Fish]: `set -g JAVA_HOME "` *path to installation* `"`
   + using Windows Command Prompt: `set JAVA_HOME="` *path to installation* `"`