fix(snippets): fixed JavaScript/TypeScript icon & label names in files to meet standards

Author: mk965

data/snippets/casing-utils.mdx

@@ -2,10 +2,10 @@
 heading: 'Casing utilities'
 title: 'String casing utilities in JavaScript'
 date: '2024-10-18'
-icon: 'Typescript'
+icon: 'TypeScript'
 draft: false
 summary: 'A various ready-to-use string casing utilities in Typescript.'
-tags: ['javascript', 'typescript', 'string', 'casing', 'utilities']
+tags: ['JavaScript', 'TypeScript', 'string', 'casing', 'utilities']
 ---
 
 I know that we suppose to have a library for this, but sometimes what we need is just a simple function to handle 1 or 2 cases <Twemoji emoji="man-shrugging" />

data/snippets/color-validator.mdx

@@ -2,10 +2,10 @@
 heading: 'Color validator'
 title: 'Check if a string is a valid color'
 date: '2024-10-18'
-icon: 'Javascript'
+icon: 'JavaScript'
 draft: false
 summary: 'Validate strings to ensure they represent valid colors in various formats (hex, RGB, and named colors).'
-tags: ['javascript', 'color', 'validator']
+tags: ['JavaScript', 'color', 'validator']
 ---
 
 #### <Twemoji emoji="warning" /> For client-side only, not work in Node.js

data/snippets/event-emitter.mdx

@@ -2,10 +2,10 @@
 heading: 'Event Emitter'
 title: 'Simple Event-Emitter/PubSub pattern'
 date: '2024-10-18'
-icon: 'Javascript'
+icon: 'JavaScript'
 draft: false
 summary: 'A lightweight pub/sub mechanism to handle custom events without adding a full-blown library.'
-tags: ['javascript', 'pattern', 'event-emitter', 'pubsub']
+tags: ['JavaScript', 'pattern', 'event-emitter', 'pubsub']
 ---
 
 Simple Event Emitter or PubSub pattern <Twemoji emoji="owl" />

data/snippets/relative-time-ago-parsing.mdx

@@ -2,10 +2,10 @@
 heading: 'Relative time-ago parsing'
 title: 'Get Human-Readable "Time Ago" in TypeScript'
 date: '2025-05-18'
-icon: 'Typescript'
+icon: 'TypeScript'
 draft: false
 summary: 'A simple TypeScript utility to display relative time like "5 minutes ago" or "2 days ago" from a given timestamp.'
-tags: ['typescript', 'date', 'time-ago', 'utility']
+tags: ['TypeScript', 'date', 'time-ago', 'utility']
 ---
 
 A simple TypeScript utility to display relative time like **"5 minutes ago"** or **"2 days ago"** from a given timestamp.

data/snippets/typescript-optional.mdx

@@ -2,10 +2,10 @@
 heading: 'TypeScript optional property types'
 title: 'An elegant solution for implementing optional property types using TypeScript'
 date: '2025-02-09'
-icon: 'Typescript'
+icon: 'TypeScript'
 draft: false
 summary: 'How to use TypeScript type tools to implement interface definitions with some optional properties to improve code maintainability and flexibility.'
-tags: ['javascript', 'typescript', 'utilities']
+tags: ['JavaScript', 'TypeScript', 'utilities']
 ---
 
 When developing a TypeScript project, defining types and interfaces is a basic and important task. However, we often encounter such scenarios: