chore(docs): reorder imports across documentation files for consistency

documentation/source.config.ts

@@ -1,10 +1,10 @@
+import { remarkMdxMermaid } from "fumadocs-core/mdx-plugins";
 import {
 	defineConfig,
 	defineDocs,
 	frontmatterSchema,
 	metaSchema,
 } from "fumadocs-mdx/config";
-import { remarkMdxMermaid } from "fumadocs-core/mdx-plugins";
 
 // You can customise Zod schemas for frontmatter and `meta.json` here
 // see https://fumadocs.dev/docs/mdx/collections