Port System.Management source comments to Docs (#2493)

* Port System.Management source comments to Docs

* Apply suggestions from code review

Suggestions by rpetrusha

Co-Authored-By: Ron Petrusha <[email protected]>

Author: carlossanlop

xml/System.Management/ConnectionOptions.xml

@@ -485,7 +485,13 @@ NTLMDOMAIN:<domain name>
       <Docs>
         <summary>Sets the password for the specified user.</summary>
         <value>Returns a SecureString value used for the password in a connection to WMI.</value>
-        <remarks>To be added.</remarks>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+          
+A blank <xref:System.Security.SecureString> ("") specifies a valid zero-length password.
+
+          ]]></format>
+        </remarks>
       </Docs>
     </Member>
     <Member MemberName="Username">
@@ -533,4 +539,4 @@ NTLMDOMAIN:<domain name>
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>

xml/System.Management/ManagementQuery.xml

@@ -26,7 +26,13 @@
   </Attributes>
   <Docs>
     <summary>Provides an abstract base class for all management query objects.</summary>
-    <remarks>To be added.</remarks>
+    <remarks>
+      <format type="text/markdown"><![CDATA[
+      
+This class is abstract; only derivatives of it are actually used in the API.
+
+      ]]></format>
+    </remarks>
   </Docs>
   <Members>
     <Member MemberName="Clone">

xml/System.Management/ObjectQuery.xml

@@ -17,7 +17,13 @@
   <Interfaces />
   <Docs>
     <summary>Represents a management query that returns instances or classes.</summary>
-    <remarks>To be added.</remarks>
+    <remarks>
+      <format type="text/markdown"><![CDATA[
+      
+This class or its derivatives are used to specify a query in the <xref:System.Management.ManagementObjectSearcher>. Use a more specific query class whenever possible.
+
+      ]]></format>
+    </remarks>
   </Docs>
   <Members>
     <MemberGroup MemberName=".ctor">
@@ -158,4 +164,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>