html fixes in documentation

Doc/Manual/CSharp.html

@@ -75,9 +75,6 @@ There are some minor exceptions, where the minimum required is .NET 4.0.
 This is when using the <tt>std::complex</tt> and <tt>std::list</tt> STL containers.
 </p>
 
-<p>
-</p>
-
 <p>
 To get the most out of this chapter an understanding of interop is required.
 The <a href="https://msdn.microsoft.com">Microsoft Developer Network (MSDN)</a> has a good reference guide in a section titled "Interop Marshaling".

Doc/Manual/Contents.html

@@ -1499,6 +1499,9 @@
 <li><a href="R.html#R_nn5">General policy</a>
 <li><a href="R.html#R_language_conventions">Language conventions</a>
 <li><a href="R.html#R_nn6">C++ classes</a>
+<ul>
+<li><a href="R.html#R_class_examples">Examples</a>
+</ul>
 <li><a href="R.html#R_nn7">Enumerations</a>
 </ul>
 </div>

Doc/Manual/Doxygen.html

@@ -1204,6 +1204,7 @@ Here is the list of all Doxygen tags and the description of how they are transla
 <td>\b</td>
 <td>wrapped with '**'</td>
 </tr>
+<tr>
 <td>\c</td>
 <td>wrapped with '``'</td>
 </tr>
@@ -1299,7 +1300,7 @@ Here is the list of all Doxygen tags and the description of how they are transla
 <td>\overload</td>
 <td>prints 'This is an overloaded ...' according to Doxygen docs</td>
 </tr>
-</tr>
+<tr>
 <td>\p</td>
 <td>wrapped with '``'</td>
 </tr>

Doc/Manual/R.html

@@ -209,13 +209,13 @@ the future we hope to utilise the built in R6 class structures.
 
 <p>
 The R interface has the following capabilities:
+</p>
 <ul>
   <li> Destructor methods are registered and called automatically by the R garbage collector.
 <li> A range of std::vector types are converted automatically to R equivalents via the std_vector.i library.
 <li> The $ operator is used for method access.
 <li> Variable accessors are automatically generated and called via the $, [, [[, $&lt;-,  [&lt;-, [[&lt;- operators.
 </ul>
-</p>
 
 <H3><a name="R_class_examples">34.6.1 Examples</a></H3>
 
@@ -275,7 +275,7 @@ v1$Available
 <p>
 A useful trick to determine the methods that are available is to
 query the R method definition as follows:
-<p>
+</p>
 
 <div class="code">
   <pre>
@@ -298,7 +298,6 @@ function (x, name)
         }
     else f(x)
 }
-<bytecode: 0x55947ff80f68>
 
 Signatures:
         x