Docs: Reformat known arch alias list

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/README.md b/README.md
index 4718e6ee9c16901efa6227a3d58ef85dba3e78e8..3b448fbf15cfc506ad86a169b2cc0a596b006079 100644 (file)
--- a/README.md
+++ b/README.md
@@ -290,7 +290,12 @@ Options
     If `<arch>` starts with a capital ascii letter, it is an alias
     for some other arch: it is looked up in the configuration, and
     then in the builtin arch alias list.  The builtin list is
-    equivalent to: `[arch]` `RPI='arm-unknown-linux-gnueabihf'`.
+    equivalent to:
+
+      ```
+[arch]
+RPI="arm-unknown-linux-gnueabihf"
+      ```
 
   * `-o` | `--online` | `-O` | `--offline`