fix: admonition colors (#119)

Author: AuHau

docs/user-documentation/pss.md

@@ -14,7 +14,7 @@ PSS provides a pub-sub facility that can be used for a variety of tasks. Nodes a
 
 The intended use of PSS is to communicate privately with a publicly known identity (to for example initiate further communication directly). Due to the cost of mining the trojan chunks, it is not recommended to use as an instant messaging system.
 
-:::warn Light nodes are unreachable
+:::caution Light nodes are unreachable
 Be aware! You can not send message to Light nodes! This is because light nodes does not fully participate
 in the data exchange in Swarm network and hence the message won't arrive to them.
 :::

docusaurus.config.js

@@ -110,7 +110,7 @@ module.exports = {
               : "https://github.com/ethersphere/bee-js-docs",
         },
         theme: {
-          customCss: require.resolve("./src/css/custom.css"),
+          customCss: [require.resolve("./src/css/custom.css")],
         },
       },
     ],