Add missing reference docs for *.resourceDir directives

Author: Gedochao

modules/directives/src/main/scala/scala/build/preprocessing/directives/Resources.scala

@@ -15,8 +15,12 @@ import scala.cli.commands.SpecificationLevel
     |
     |//> using resourceDirs _path1_ _path2_ …""".stripMargin,
   """`//> using resourceDir` _path_
+    |`//> using resourceDirs` _path1_ _path2_ …
     |
-    |`//> using resourceDirs` _path1_ _path2_ …""".stripMargin
+    |`//> using test.resourceDir` _path_
+    |`//> using test.resourceDirs` _path1_ _path2_ …
+    |
+    |""".stripMargin
 )
 @DirectiveDescription("Manually add a resource directory to the class path")
 @DirectiveLevel(SpecificationLevel.SHOULD)

website/docs/reference/directives.md

@@ -433,9 +433,13 @@ Accepts predefined repositories supported by Coursier (like `sonatype:snapshots`
 Manually add a resource directory to the class path
 
 `//> using resourceDir` _path_
-
 `//> using resourceDirs` _path1_ _path2_ …
 
+`//> using test.resourceDir` _path_
+`//> using test.resourceDirs` _path1_ _path2_ …
+
+
+
 #### Examples
 `//> using resourceDir ./resources`
 

website/docs/reference/scala-command/directives.md

@@ -256,9 +256,13 @@ Accepts predefined repositories supported by Coursier (like `sonatype:snapshots`
 Manually add a resource directory to the class path
 
 `//> using resourceDir` _path_
-
 `//> using resourceDirs` _path1_ _path2_ …
 
+`//> using test.resourceDir` _path_
+`//> using test.resourceDirs` _path1_ _path2_ …
+
+
+
 #### Examples
 `//> using resourceDir ./resources`