Automatically port StringComparer docs (EII) (#4027)

Author: carlossanlop

xml/System/StringComparer.xml

@@ -1101,11 +1101,27 @@ The following example demonstrates the properties and the <xref:System.StringCom
         <Parameter Name="y" Type="System.Object" Index="1" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6" />
       </Parameters>
       <Docs>
-        <param name="x">To be added.</param>
-        <param name="y">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="x">The first object to compare.</param>
+        <param name="y">The second object to compare.</param>
+        <summary>Compares two objects and returns a value indicating whether one is less than, equal to, or greater than the other.</summary>
+        <returns>A signed integer that indicates the relative values of <paramref name="x" /> and <paramref name="y" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This member is an explicit interface member implementation. It can be used only when the <xref:System.StringComparer> instance is cast to an <xref:System.Collections.IComparer> interface.
+
+The return value has these meanings:
+
+| Value             | Meaning                  |
+|-------------------|--------------------------|
+| Less than zero    | `x` is less than `y`.    |
+| Zero              | `x` equals `y`.          |
+| Greater than zero | `x` is greater than `y`. |
+
+          ]]></format>
+        </remarks>
       </Docs>
     </Member>
     <Member MemberName="System.Collections.IEqualityComparer.Equals">
@@ -1145,11 +1161,20 @@ The following example demonstrates the properties and the <xref:System.StringCom
         <Parameter Name="y" Type="System.Object" Index="1" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.1" />
       </Parameters>
       <Docs>
-        <param name="x">To be added.</param>
-        <param name="y">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="x">The first object to compare.</param>
+        <param name="y">The second object to compare.</param>
+        <summary>Determines whether the specified objects are equal.</summary>
+        <returns>
+          <see langword="true" /> if the specified objects are equal; otherwise, <see langword="false" />.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This member is an explicit interface member implementation. It can be used only when the <xref:System.StringComparer> instance is cast to an <xref:System.Collections.IEqualityComparer> interface.
+
+          ]]></format>
+        </remarks>
       </Docs>
     </Member>
     <Member MemberName="System.Collections.IEqualityComparer.GetHashCode">
@@ -1188,10 +1213,18 @@ The following example demonstrates the properties and the <xref:System.StringCom
         <Parameter Name="obj" Type="System.Object" Index="0" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netcore-2.0;netcore-2.1;netcore-2.2;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6;netstandard-2.1" />
       </Parameters>
       <Docs>
-        <param name="obj">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
-        <remarks>To be added.</remarks>
+        <param name="obj">The object from which to obtain the hash code.</param>
+        <summary>Returns a hash code for the specified object.</summary>
+        <returns>A hash code for the specified object.</returns>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+
+## Remarks
+
+This member is an explicit interface member implementation. It can be used only when the <xref:System.StringComparer> instance is cast to an <xref:System.Collections.IEqualityComparer> interface.
+
+          ]]></format>
+        </remarks>
       </Docs>
     </Member>
   </Members>