Update documentation

docs/html/md_README.html

@@ -58,7 +58,7 @@ $(function() {
       <div id="nav-sync" class="sync"></div>
     </div>
   </div>
-  <div id="splitbar" style="-moz-user-select:none;"
+  <div id="splitbar" style="-moz-user-select:none;" 
        class="ui-resizable-handle">
   </div>
 </div>
@@ -763,12 +763,12 @@ Mappings are available as &lt;tt&gt;SignalInfo::valueDescriptions&lt;/tt&gt; and
 &lt;tt&gt;DecodeSignal::valueDescriptions&lt;/tt&gt;, and survive both database builders, including
 &lt;tt&gt;TreeNode::GetSignal()&lt;/tt&gt;. Consumers can look up a decoded result directly:
 
-@icode{cpp}
+@icode{cpp} 
 const DecodedSignalValue &amp;value = decodedFrame.signals.at(0);
 if (const std::string *description = value.GetValueDescription()) {
     std::cout &lt;&lt; *description;
 }
-@endicode
+@endicode 
 
 &lt;tt&gt;GetValueDescription()&lt;/tt&gt; uses the exact raw integer before factor/offset scaling.
 It returns &lt;tt&gt;nullptr&lt;/tt&gt; for an invalid decode or an unknown value; numeric decoding
@@ -884,13 +884,13 @@ The root project declares &lt;tt&gt;tests.depends = core&lt;/tt&gt; for parallel
 
 Build out of source with Qt 6.8.2:
 
-@icode{sh}
+@icode{sh} 
 mkdir build
 cd build
 qmake6 ../dbc.pro
 make -j
 make check
-@endicode
+@endicode 
 
 &lt;tt&gt;core/core_files.pri&lt;/tt&gt; lists the library sources and headers.
 Consumers include &lt;tt&gt;core/core.pri&lt;/tt&gt; for include paths and library linkage; the test
@@ -902,12 +902,12 @@ When building a consumer separately, pass
 
 From the repository root:
 
-@icode{sh}
+@icode{sh} 
 mkdir -p build/core
 cd build/core
 qmake6 ../../core/core.pro
 make -j
-@endicode
+@endicode 
 
 qmake is still the build tool; this target does not link Qt libraries.
 
@@ -923,13 +923,13 @@ no display server is required. An explicit platform setting is preserved.
 
 Enable its library and focused QtTest suite:
 
-@icode{sh}
+@icode{sh} 
 mkdir -p build-qt
 cd build-qt
 qmake6 ../dbc.pro CONFIG+=dbc_qt
 make -j
 make check
-@endicode
+@endicode 
 
 Consumers include &lt;tt&gt;qt/qt.pri&lt;/tt&gt; instead of &lt;tt&gt;core/core.pri&lt;/tt&gt;, and set
 &lt;tt&gt;DBC_CORE_BUILD_DIR&lt;/tt&gt; and &lt;tt&gt;DBC_QT_BUILD_DIR&lt;/tt&gt; to the corresponding library build
@@ -937,7 +937,7 @@ directories when building separately. A widget application also needs &lt;tt&gt;
 &lt;tt&gt;no_keywords&lt;/tt&gt;, because core metadata has a &lt;tt&gt;signals&lt;/tt&gt; member; use &lt;tt&gt;Q_SIGNALS&lt;/tt&gt;,
 &lt;tt&gt;Q_SLOTS&lt;/tt&gt;, and &lt;tt&gt;Q_EMIT&lt;/tt&gt; in consuming Qt classes.
 
-@icode{cpp}
+@icode{cpp} 
 #include "<a class="el" href="dbc__parser_8h.html" title="Created: 2026-03-13 Author: Deeaitch (Dim. Himro)">dbc_parser.h</a>"
 #include "<a class="el" href="dbc__tree__builder_8h.html" title="Created: 2026-03-13 Author: Deeaitch (Dim. Himro)">dbc_tree_builder.h</a>"
 #include "<a class="el" href="dbc__tree__model_8h_source.html">dbc_tree_model.h</a>"
@@ -952,7 +952,7 @@ view.expandAll();
 view.show();
 // On reload, pass a newly built tree to SetTree(); to clear:
 // model-&gt;SetTree(nullptr);
-@endicode
+@endicode 
 
 The root is invisible: frames are top-level rows, signals are their children.
 Only column zero has children. &lt;tt&gt;parent()&lt;/tt&gt; always returns column zero.