Add sidebar item, fix typo error

- Add meetup-2-guide to sidebar
- Fix typo error in meetup-2-guide both cn/en

Signed-off-by: Asai Neko <sugar@sne.moe>

astro.config.mjs

@@ -30,7 +30,7 @@ export default defineConfig({
                     href: 'https://git.sne.moe/sugar/nixcn-web',
                 },
             ],
-            sidebar: [],
+            sidebar: ['meetup-2-guide'],
             plugins: [],
         }),
         mdx(),

src/content/docs/en/meetup-2-guide.mdx

@@ -1,13 +1,15 @@
 ---
-title: 'Nix/NixOS CN Meetup #2 Guide'
-description: 'Nix/NixOS CN Meetup #2 is the second Nix-themed meetup in China. We aim to bring together NixOS enthusiasts, developers, and practitioners to share usage experiences, best practices, and real-world applications of NixOS.'
+title: 'Nix CN Meetup #2 Guide'
+description: 'Nix CN Meetup #2 is the second Nix-themed meetup in China. We aim to bring together NixOS enthusiasts, developers, and practitioners to share usage experiences, best practices, and real-world applications of NixOS.'
+sidebar:
+    label: 'Meetup #2 Guide'
 ---
 
 import { Aside } from '@astrojs/starlight/components';
 
 <Aside type="caution">Translated by ChatGPT, not proofread.</Aside>
 
-Nix/NixOS CN Meetup #2 is the second Nix-themed gathering in China. We aim to bring together NixOS enthusiasts, developers, and practitioners to share their experiences, best practices, and use cases of NixOS in various scenarios.
+Nix CN Meetup #2 is the second Nix-themed gathering in China. We aim to bring together NixOS enthusiasts, developers, and practitioners to share their experiences, best practices, and use cases of NixOS in various scenarios.
 
 ## Event Information
 
@@ -111,7 +113,7 @@ Estimated taxi/ride-hailing fare: **50–60 CNY**.
 
 ### Arriving at the Venue
 
-Venue: **Dong Shangyuan (East Upper Yard) Teaching Building** (exact room TBA).
+Venue: **Dong Xiayuan (East Upper Yard) Teaching Building** (exact room TBA).
 Location: Southeast area of the campus, near South Gate 2 (closed).
 Distances:
 - ~1200 m from **Siyuan Gate / South Gate**

src/content/docs/meetup-2-guide.mdx

@@ -1,6 +1,8 @@
 ---
-title: 'Nix/NixOS CN Meetup #2 参会指南'
-description: 'Nix/NixOS CN Meetup #2 是国内第二次以 Nix 为主题的聚会。我们希望汇聚国内 NixOS 爱好者、开发者和实践者，共同分享 NixOS 的使用经验、最佳实践以及在不同场景下的应用案例。'
+title: 'Nix CN Meetup #2 参会指南'
+description: 'Nix CN Meetup #2 是国内第二次以 Nix 为主题的聚会。我们希望汇聚国内 NixOS 爱好者、开发者和实践者，共同分享 NixOS 的使用经验、最佳实践以及在不同场景下的应用案例。'
+sidebar:
+    label: 'Meetup #2 参会指南'
 ---
 
 Nix/NixOS CN Meetup #2 是国内第二次以 Nix 为主题的聚会。我们希望汇聚国内 NixOS 爱好者、开发者和实践者，共同分享 NixOS 的使用经验、最佳实践以及在不同场景下的应用案例。
@@ -83,7 +85,7 @@ Nix/NixOS CN Meetup #2 是国内第二次以 Nix 为主题的聚会。我们希
 
 ### 抵达会场
 
-会场地点：**东上院教学楼**（具体教室待定），位于校区东南侧，靠近南二门（不开放）。距离 思源门/南大门 约 1200 米，距离 北一门/东三门 约 1600 米。
+会场地点：**东下院教学楼**（具体教室待定），位于校区东南侧，靠近南二门（不开放）。距离 思源门/南大门 约 1200 米，距离 北一门/东三门 约 1600 米。
 
 ## 住宿信息