Revert "userguide: fixes link to repositories pref page."

Revert "docs: promote SoftwareUpdater as easy tool to update Haiku."

This reverts commit c4b4f84bade59a23044f507e8f68b8c8c9e9fe11.
This reverts commit 35941876c819fdfa980c423f089b10e2301692e2.

--

The Userguide and Welcome Guide are written and managed in the Userguide
Translator, not in the tree.

userguide/en/applications.html

@@ -128,8 +128,6 @@
 		<td valign="top">A tool to take screenshots.</td></tr>
 	<tr><td style="width:24px;"><img src="../images/apps-images/showimage-icon_16.png" alt="icon" width="16" height="16" /></td><td><a href="applications/showimage.html">ShowImage</a></td><td> </td>
 		<td valign="top">A simple image viewer.</td></tr>
-	<tr><td style="width:24px;"><img src="../images/apps-images/softwareupdater-icon_16.png" alt="icon" width="16" height="16" /></td><td><a href="applications/softwareupdater.html">SoftwareUpdater</a></td><td> </td>
-		<td valign="top">A tool to keep your Haiku updated.</td></tr>
 	<tr><td style="width:24px;"><img src="../images/apps-images/soundrecorder-icon_16.png" alt="icon" width="16" height="16" /></td><td><a href="applications/soundrecorder.html">SoundRecorder</a></td><td> </td>
 		<td valign="top"><span style="color:silver">A tool to record audio from line-in or a microphone. [<i>still missing</i>]</span></td></tr>
 	<tr><td style="width:24px;"><img src="../images/apps-images/stylededit-icon_16.png" alt="icon" width="16" height="16" /></td><td><a href="applications/stylededit.html">StyledEdit</a></td><td> </td>

userguide/en/applications/softwareupdater.html

@@ -63,7 +63,7 @@
 <tr><td>Settings:</td><td></td><td><span class="path">~/config/settings/SoftwareUpdater_settings</span></td></tr>
 </table>
 <p><br /></p>
-<p>SoftwareUpdater checks all active repositories (see the <a href="../preferences/repositories.html">Repositories preferences</a>) for updates to the installed packages, including system updates to Haiku itself. It downloads and installs the available updates in one go.</p>
+<p>SoftwareUpdater checks all active repositories (see the <a href="../prefereces/repositories.html">Repositories preferences</a>) for updates to the installed packages, including system updates to Haiku itself. It downloads and installs the available updates in one go.</p>
 <img src="../images/apps-images/softwareupdater.png" alt="SoftwareUpdater's main window" />
 <p>After launching, SoftwareUpdater checks for updates to packages and displays them in a list with their new version and a short description. You can opt to <span class="menu">Show more details</span> to include the name of the repository for each package and show both the old and new package versions.</p>
 <p><span class="button">Update now</span> will start the download of all the packages and their subsequent installation.</p>

welcome/welcome_en.html

@@ -103,8 +103,7 @@ Because of our binary and source compatibility, most BeOS applications run on Ha
 <h2>
 <a href="#"><img src="images/up.png" style="border:none;float:right" alt="index" /></a>
 <a id="update" name="update">Updating Haiku</a></h2>
-<p>Updating Haiku is easy with <a href="../userguide/en/applications/softwareupdater.html">SoftwareUpdater</a> application. 
+<p>Updating Haiku is currently done from the command line. Open a Terminal and enter "pkgman update". When it's finished, reboot.<br />
-It can also be done from the command line. Open a Terminal and enter "pkgman update". When it's finished, reboot.<br />
 For more details, see the guide <a href="https://www.haiku-os.org/guides/daily-tasks/updating-system">Updating your system</a> on our website.</p>
 
 <h2>