Stop pointing to futurice now macOS is supported

Created by: dwijnand

(And a small text change around "macOS".)

www/index.html

@@ -33,7 +33,7 @@
       <div id="platform-instructions-mac" class="instructions" style="display: none;">
         <p>Run the following in your terminal, then follow the onscreen instructions.</p>
         <pre>curl https://get-ghcup.haskell.org -sSf | sh</pre>
-        <p class="other-help">If you don't like curl | sh, see <a href="https://github.com/haskell/ghcup#manual-install">other installation methods</a>.<br/>You appear to be running Mac OS X. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
+        <p class="other-help">If you don't like curl | sh, see <a href="https://github.com/haskell/ghcup#manual-install">other installation methods</a>.<br/>You appear to be running macOS. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
       </div>
 
       <div id="platform-instructions-freebsd" class="instructions" style="display: none;">
@@ -62,7 +62,7 @@
         <!-- unrecognized platform: ask for help -->
         <p>I don't recognize your platform.</p>
         <p>
-          ghcup runs on Linux, Mac OS X and FreeBSD. If
+          ghcup runs on Linux, macOS and FreeBSD. If
           you are on one of these platforms and are seeing this then please
           <a href="https://github.com/haskell/ghcup/issues">report an issue</a>,
           along with the following values:
@@ -77,7 +77,7 @@
 
         <!-- duplicate the default cross-platform instructions -->
         <div>
-          <p>If you are running Linux, Mac OS X or FreeBSD,<br/>run the following in your terminal, then follow the onscreen instructions.</p>
+          <p>If you are running Linux, macOS or FreeBSD,<br/>run the following in your terminal, then follow the onscreen instructions.</p>
           <pre>curl https://get-ghcup.haskell.org -sSf | sh</pre>
           <p class="other-help">If you don't like curl | sh, see <a href="https://github.com/haskell/ghcup#manual-install">other installation methods</a>.</p>
         </div>
@@ -95,7 +95,7 @@
 
       <div id="platform-instructions-default" class="instructions">
         <div>
-          <p>To install Haskell, if you are running Linux, Mac OS X or FreeBSD,<br/>run the following
+          <p>To install Haskell, if you are running Linux, macOS or FreeBSD,<br/>run the following
           in your terminal, then follow the onscreen instructions.</p>
           <pre>curl https://get-ghcup.haskell.org -sSf | sh</pre>
           <p class="other-help">If you don't like curl | sh, see <a href="https://github.com/haskell/ghcup#manual-install">other installation methods</a>.</p>
@@ -140,7 +140,7 @@
 
       <div id="platform-instructions-default" class="instructions">
         <div>
-          <p>To install Haskell, if you are running Linux, Mac OS X or FreeBSD,<br/>run the following
+          <p>To install Haskell, if you are running Linux, macOS or FreeBSD,<br/>run the following
           in your terminal, then follow the onscreen instructions.</p>
           <pre>curl https://get-ghcup.haskell.org -sSf | sh</pre>
           <p class="other-help">If you don't like curl | sh, see <a href="https://github.com/haskell/ghcup#manual-install">other installation methods</a>.</p>