added page for nextflow installation

Author: aseetharam

src/content/docs/guide/example.mdx

@@ -12,7 +12,7 @@ sidebar:
 ---
 
 import { FileTree, Aside, Card, CardGrid, Steps, Icon, Tabs, TabItem } from '@astrojs/starlight/components';
-import { Code } from 'astro-expressive-code/components'
+import { Code } from 'astro-expressive-code/components';
 
 
 Guides lead a user through a specific task they want to accomplish, often with a sequence of steps.

src/content/docs/guide/nextflow.mdx

@@ -8,7 +8,7 @@ tableOfContents:
 ---
 
 import { FileTree, Aside, Card, CardGrid, Steps, Icon, Tabs, TabItem } from '@astrojs/starlight/components';
-import { Code } from 'astro-expressive-code/components'
+import { Code } from 'astro-expressive-code/components';
 
 
 Nextflow is a powerful workflow management system that simplifies the process of writing and executing complex data analysis pipelines.