fix(seo): shorten page titles to under 60 characters

Shorten titles that exceeded 60 chars to prevent truncation in search results:

- garbage-collection: 67 → 47 chars
- object-methods: 65 → 44 chars
- tagged-template-literals: 64 → 50 chars
- proxy-reflect: 63 → 47 chars
- javascript-type-nuances: 61 → 44 chars

Per ahrefs SEO recommendation: titles should be 50-60 chars (max 600px).

Author: leonardomso

docs/beyond/concepts/garbage-collection.mdx

@@ -1,5 +1,5 @@
 ---
-title: "Garbage Collection in JavaScript: How Memory is Freed Automatically"
+title: "Garbage Collection: How JavaScript Frees Memory"
 sidebarTitle: "Garbage Collection"
 description: "Learn how JavaScript garbage collection works. Understand mark-and-sweep, reachability, and how to write memory-efficient code that helps the engine."
 ---

docs/beyond/concepts/javascript-type-nuances.mdx

@@ -1,5 +1,5 @@
 ---
-title: "Type Nuances: null, undefined, typeof, and More in JavaScript"
+title: "Type Nuances: null, undefined, typeof & More"
 sidebarTitle: "Type Nuances"
 description: "Learn JavaScript type nuances: null vs undefined, typeof quirks, nullish coalescing (??), optional chaining (?.), Symbols, and BigInt for large integers."
 ---

docs/beyond/concepts/object-methods.mdx

@@ -1,5 +1,5 @@
 ---
-title: "Object Methods: Inspecting and Transforming Objects in JavaScript"
+title: "Object Methods: Keys, Values, Entries & More"
 sidebarTitle: "Object Methods: Inspect & Transform"
 description: "Learn JavaScript Object methods. Master Object.keys(), values(), entries(), assign(), structuredClone(), hasOwn(), and groupBy() for object manipulation."
 ---

docs/beyond/concepts/proxy-reflect.mdx

@@ -1,5 +1,5 @@
 ---
-title: "Proxy and Reflect: Intercepting Object Operations in JavaScript"
+title: "Proxy & Reflect: Intercepting Object Operations"
 sidebarTitle: "Proxy & Reflect: Intercepting Object Operations"
 description: "Learn JavaScript Proxy and Reflect APIs. Understand how to intercept object operations, create reactive systems, implement validation, and build powerful metaprogramming patterns."
 ---

docs/beyond/concepts/tagged-template-literals.mdx

@@ -1,5 +1,5 @@
 ---
-title: "Tagged Template Literals: Custom String Processing in JavaScript"
+title: "Tagged Template Literals: Custom String Processing"
 sidebarTitle: "Tagged Template Literals"
 description: "Learn JavaScript tagged template literals. Understand how tag functions work, access raw strings, build HTML sanitizers, create DSLs, and use String.raw for file paths."
 ---