docs: use https for mesonbuild.com

Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>

docs/meson.html

@@ -26,7 +26,7 @@
 <h2 id="intro">1. Introduction</h2>
 
 <p>For general information about Meson see the
-<a href="http://mesonbuild.com/">Meson website</a>.</p>
+<a href="https://mesonbuild.com/">Meson website</a>.</p>
 
 <p><strong>Mesa's Meson build system is generally considered stable and ready
 for production.</strong></p>
@@ -70,7 +70,7 @@ Meson only supports out-of-tree builds, and must be passed a
 directory to put built and generated sources into. We'll call that directory
 "build" here.
 It's recommended to create a
-<a href="http://mesonbuild.com/Using-multiple-build-directories.html">
+<a href="https://mesonbuild.com/Using-multiple-build-directories.html">
 separate build directory</a> for each configuration you might want to use.
 </p>
 
@@ -119,7 +119,7 @@ meson configure build/ -Dprefix=/tmp/install -Dglx=true
 
 <p>
 Note that options taking lists (such as <code>platforms</code>) are
-<a href="http://mesonbuild.com/Build-options.html#using-build-options">a bit
+<a href="https://mesonbuild.com/Build-options.html#using-build-options">a bit
 more complicated</a>, but the simplest form compatible with Mesa options
 is to use a comma to separate values (<code>-D platforms=drm,wayland</code>)
 and brackets to represent an empty list (<code>-D platforms=[]</code>).
@@ -224,7 +224,7 @@ ninja -C build-clang
 <p>
 The default compilers depends on your operating system. Meson supports most of
 the popular compilers, a complete list is available
-<a href="http://mesonbuild.com/Reference-tables.html#compiler-ids">here</a>.
+<a href="https://mesonbuild.com/Reference-tables.html#compiler-ids">here</a>.
 </p>
 </dd>