Include [build] header in example

awvwgk · LKedward · awvwgk · commit 1e4cf61d964d · 2020-11-13T09:34:56.000+01:00
Co-authored-by: Laurence Kedward &lt;laurence.kedward@bristol.ac.uk&gt;
diff --git a/manifest-reference.md b/manifest-reference.md
@@ -298,6 +298,7 @@ The list of library dependencies is exported to dependent packages.
 To link against the zlib compression library use
 
 ```toml
+[build]
 link = "z"
 ```
 
