update changelog

utilities/manual/build/html/CHANGELOG.html

@@ -221,6 +221,8 @@ <h2>TeXstudio 4.8.6<a class="headerlink" href="#texstudio-4-8-6" title="Link to
 <li><p>add Grid menu to windowed and embedded pdf-viewer’s context menu <a class="reference external" href="https://github.com/texstudio-org/texstudio/pull/3942">#3942</a></p></li>
 <li><p>fix pdf-viewer’s scrollbar with Fit to Width/Window and changing Continuous mode <a class="reference external" href="https://github.com/texstudio-org/texstudio/pull/3928">#3928</a></p></li>
 <li><p>fix pdf-viewer’s Custom Grid dialog not preset with current Grid settings in Continuous mode <a class="reference external" href="https://github.com/texstudio-org/texstudio/pull/3929">#3929</a></p></li>
+<li><p>fix pfd-viewer’s page display in non continuous mode <a class="reference external" href="https://github.com/texstudio-org/texstudio/pull/3952">3952</a></p></li>
+<li><p>fix pdf-viewer has a small issue when activating single page step <a class="reference external" href="https://github.com/texstudio-org/texstudio/pull/3957">3957</a></p></li>
 <li><p>add maximize button to Packages Help (Texdoc) dialog <a class="reference external" href="https://github.com/texstudio-org/texstudio/pull/3911">#3911</a></p></li>
 <li><p>fix option ‘all packages’ no longer checked in Packages Help with no tex documents opened <a class="reference external" href="https://github.com/texstudio-org/texstudio/pull/3917">#3917</a></p></li>
 <li><p>when context menu of a package name is used to open the Packages Help dialog then preset search filter with the name <a class="reference external" href="https://github.com/texstudio-org/texstudio/pull/3918">#3918</a></p></li>