Fix case sensitive anchor link

Author: reinink

docs/source/docs/installation.blade.md

@@ -11,7 +11,7 @@ title: "Installation"
 
 ## CDN
 
-Before getting started please note, **many of the features that make Tailwind CSS great are not available using the CDN builds.** To take full advantage of Tailwind's features, [install Tailwind via npm](#NPM).
+Before getting started please note, **many of the features that make Tailwind CSS great are not available using the CDN builds.** To take full advantage of Tailwind's features, [install Tailwind via npm](#npm).
 
 For pulling in Tailwind for quick demos or just giving the framework a spin, grab the latest default configuration build via CDN:
 
@@ -77,12 +77,12 @@ To avoid specificity issues, we highly recommend structuring your main styleshee
  * override them.
  *
  * Example:
- * 
+ *
  * .btn { ... }
  * .form-input { ... }
  *
  * Or if using a preprocessor:
- * 
+ *
  * @@import "components/buttons";
  * @@import "components/forms";
  */
@@ -103,7 +103,7 @@ To avoid specificity issues, we highly recommend structuring your main styleshee
  * .skew-45 { ... }
  *
  * Or if using a preprocessor..
- * 
+ *
  * @@import "utilities/background-patterns";
  * @@import "utilities/skew-transforms";
  */