Replace Freenode reference

include/microsoft-windows.html

@@ -6,20 +6,29 @@
 <h2>Installing Ardour</h2>
 
 <ol>
-  <li>Download the latest windows build from <a
-  href="https://community.ardour.org/download"> the download page</a>.</li>
-  <li>Run the installer and follow the prompts.</li>
+  <li>
+    Download the latest windows build from <a
+    href="https://community.ardour.org/download"> the download page</a>.
+  </li>
+  <li>
+    Run the installer and follow the prompts.
+  </li>
 </ol>
 
 <h2>How to help</h2>
 
 <ul>
-  <li>Hang out in <a href="http://webchat.freenode.net/?channels=ardour">#ardour</a>
-  on irc.freenode.net. One may ask questions there and if possible, answer
-  questions that others have.</li>
-  <li>Keep an eye on the <a
+  <li>
+    Hang out in <a href="https://web.libera.chat//#ardour">#ardour</a>
+    on Libera. One may ask questions there and if possible, answer
+    questions that others have.
+  </li>
+  <li>
+    Keep an eye on the <a
     href="https://discourse.ardour.org/c/installation-configuration/windows">Windows
-  forum</a> and contribute to the discussions there.</li>
-  <li>Update this manual via pull requests on <a
-  href="https://github.com/Ardour/manual">github</a>.</li>
+    forum</a> and contribute to the discussions there.
+  </li>
+  <li>
+    Update this manual via pull requests
+    on <a href="https://github.com/Ardour/manual">GitHub</a>.</li>
 </ul>

include/session-properties.html

@@ -360,7 +360,7 @@
 		<dfn>Defaults</dfn>
 		<ul>
 			<li>
-				<dfn>Use these settings as defaults</dfn> clicking this buttons makes all
+				<dfn>Use these settings as defaults</dfn>: clicking this button makes all
 				the present Session Properties default, by recording them in the
 				default session template.
 			</li>