Update docs

docs/docs/ml.xml

@@ -241,6 +241,10 @@ Davis E. King. <a href="http://jmlr.csail.mit.edu/papers/volume10/king09a/king09
                   <name>gelu</name>
                   <link>dlib/dnn/layers_abstract.h.html#gelu_</link>
                </item>
+               <item>
+                  <name>smelu</name>
+                  <link>dlib/dnn/layers_abstract.h.html#smelu_</link>
+               </item>
                <item>
                   <name>concat</name>
                   <link>dlib/dnn/layers_abstract.h.html#concat_</link>

docs/docs/release_notes.xml

@@ -19,6 +19,7 @@ New Features and Improvements:
       - Added visitor to draw network architectures using the DOT language.
       - Made Barlow Twins loss much faster for high dimensionality inputs.
       - Added Focal loss gamma to loss_multibinary_log_.
+      - Added SmeLU activation layer.
 
 Non-Backwards Compatible Changes:
    - Do not round coordinates in rectangle_transform (PR #2498).

docs/docs/term_index.xml

@@ -189,6 +189,7 @@
          <term file="dlib/dnn/layers_abstract.h.html" name="clipped_relu_" include="dlib/dnn.h"/>
          <term file="dlib/dnn/layers_abstract.h.html" name="gelu_" include="dlib/dnn.h"/>
          <term file="dlib/dnn/layers_abstract.h.html" name="leaky_relu_" include="dlib/dnn.h"/>
+         <term file="dlib/dnn/layers_abstract.h.html" name="prelu_" include="dlib/dnn.h"/>
          <term file="dlib/dnn/layers_abstract.h.html" name="mish_" include="dlib/dnn.h"/>
          <term file="dlib/dnn/layers_abstract.h.html" name="prelu_" include="dlib/dnn.h"/>
          <term file="dlib/dnn/layers_abstract.h.html" name="sig_" include="dlib/dnn.h"/>