Mention Windows argument-handling syntax in Actions API docs
Fixes
RELNOTES: None.
@@ -510,7 +510,8 @@ public interface StarlarkActionFactoryApi extends StarlarkValue {
+ "<p>If <code>command</code> is a string, then it is executed as if by "
+ "<code>sh -c &lt;command&gt; \"\" &lt;arguments&gt;</code> -- that is, the "
+ "elements in <code>arguments</code> are made available to the command as "
- + "<code>$1</code>, <code>$2</code>, etc. If <code>arguments</code> contains "
+ + "<code>$1</code>, <code>$2</code> (or <code>%1</code>, <code>%2</code> if "
+ + "using Windows batch), etc. If <code>arguments</code> contains "
+ "any <a href=\"actions.html#args\"><code>actions.args()</code></a> objects, "
+ "their contents are appended one by one to the command line, so "
+ "<code>$</code><i>i</i> can refer to individual strings within an Args "
