Some docs updates

docs/en/SkiaSharp/SKAutoCanvasRestore.xml

@@ -15,7 +15,7 @@
     </Interface>
   </Interfaces>
   <Docs>
-    <summary>Convenience class used to restore the canvas state in a using statement</summary>
+    <summary>Convenience class used to restore the canvas state in a using statement.</summary>
     <remarks>This class can be used in a using statement to save the state of the canvas (matrix, clip and draw filter) allowing you to change these components and have them automatically undone by virtue of having the Dispose method restore the canvas state to the state it was when this instance was created.</remarks>
   </Docs>
   <Members>

docs/en/SkiaSharp/SKFileStream.xml

@@ -11,7 +11,7 @@
   </Base>
   <Interfaces />
   <Docs>
-    <summary>To be added.</summary>
+    <summary>Represents a Skia Stream backed by a file on the file system.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
@@ -27,9 +27,11 @@
         <Parameter Name="path" Type="System.String" />
       </Parameters>
       <Docs>
-        <param name="path">To be added.</param>
-        <summary>To be added.</summary>
-        <remarks>To be added.</remarks>
+        <param name="path">Must point to a file on the file system.</param>
+        <summary>Creates a new SKFileStream that wraps the file with the specified path.</summary>
+        <remarks>
+          <para />
+        </remarks>
       </Docs>
     </Member>
   </Members>

docs/en/SkiaSharp/SKPictureRecorder.xml

@@ -11,7 +11,7 @@
   </Base>
   <Interfaces />
   <Docs>
-    <summary>To be added.</summary>
+    <summary />
     <remarks>To be added.</remarks>
   </Docs>
   <Members>