fixes 1317

mikeblome · mikeblome · commit b36ff181e6ab · 2019-07-09T11:37:53.000-07:00
diff --git a/docs/build/reference/environment-variable-macros.md b/docs/build/reference/environment-variable-macros.md
@@ -16,7 +16,7 @@ For example:
 PATH=$(PATH);\nonesuch
 
 all:
-    echo %PATH%
+    echo %%PATH%%
 ```
 
 In this example, changing `PATH` changes the corresponding environment variable `PATH`; it appends `\nonesuch` to your path.
