refactor: update tooltip for EQ

Author: timschneeb

src/MainWindow.ui

@@ -1121,7 +1121,7 @@
            </widget>
            <widget class="QWidget" name="tabHostPage4">
             <property name="whatsThis">
-             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600; text-decoration: underline;&quot;&gt;Interpolating FIR Equalizer&lt;/span&gt;&lt;/p&gt;&lt;p&gt;Enables/disables the FIR equalizer. FIR stands for &amp;quot;Finite Impulse Response&amp;quot;&lt;/p&gt;&lt;p&gt;&lt;span style=&quot; text-decoration: underline;&quot;&gt;Filter type:&lt;/span&gt; Chooses between Minimum phase and Linear phase filtering. The minimum phase is the recommended filter type, as it minimizes latency (effectively zero for any sensible filter shape). In contrast, the phase changes introduced are not usually noticeable (linear phase is helpful in pre-/post-production of multitrack recordings, where phase relationships between tracks need to be preserved. However, in real-time playback, linear phase EQ introduces latency at least half as long as the filter length.)&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600; text-decoration: underline;&quot;&gt;Multimodal Equalizer&lt;/span&gt;&lt;/p&gt;&lt;p&gt;Enables/disables the multimodal equalizer.&lt;/p&gt;&lt;p&gt;&lt;span style=&quot; text-decoration: underline;&quot;&gt;Filter type:&lt;/span&gt; The multimodal equalizer supports both FIR (Minimal phase) and several IIR filtering modes.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
             </property>
             <layout class="QHBoxLayout" name="horizontalLayout_7" stretch="7,2">
              <property name="spacing">