docs(vuejs.mdx): fix formatting of the Start Command section for consistency in code styling (#147)

- fix(docs): correct typo in installation documentation from "Servern" to "Server" for clarity
- docs(vuejs.mdx): fix formatting of the Start Command section for consistency in code styling

Author: Snouzy

src/content/docs/applications/vuejs.mdx

@@ -15,7 +15,7 @@ Vue.js is an approachable, performant and versatile framework for building web u
 ## Server build (NodeJS|Express)
 
 - Set `Build Pack` to `nixpacks`.
-- Set 'Start Command` to `node server.js`.
+- Set `Start Command` to `node server.js`.
 
 ## Static build (SPA)
 

src/content/docs/installation.mdx

@@ -106,7 +106,7 @@ For the following things:
 ### 1. Quick Installation (Recommended)
 
 <Steps>
-1. **Prepare Your Servern**
+1. **Prepare Your Server**
    - Log in as the `root` user (non-root user is not fully supported yet [non-root-user](/docs/
    knowledge-base/server/non-root-user))
    - Configure SSH by following the [SSH Settings Configuration Guide](/docs/knowledge-base/server/openssh#ssh-settings-configuration)