DOC-3329: Add admonition that both skin and icon files are required to be in default location, and include links to relevant pages.

Author: kemister85

modules/ROOT/pages/enhanced-skins-and-icon-packs.adoc

@@ -46,6 +46,11 @@ tinymce.init({
 });
 ----
 
+[NOTE]
+====
+The `+skin+` option requires the skin files to be in the default location (`+TINYMCE_BASE/skins/ui/${skinName}+`). For custom locations or when using NPM packages without bundling, refer to xref:editor-skin.adoc[Skin options] for more information.
+====
+
 [NOTE]
 ====
 *Mixing skins and content_css:*
@@ -75,6 +80,11 @@ tinymce.init({
 });
 ----
 
+[NOTE]
+====
+The `+icons+` option requires the icon pack files to be in the default location (`+TINYMCE_BASE/icons/${iconPackName}/icons.js+`). For custom locations or when using NPM packages without bundling, refer to xref:editor-icons.adoc[Icon options] for more information.
+====
+
 [[icon-pack-compatibility-matrix]]
 == Icon pack compatibility matrix