Update FileSystemInfo.xml (#7665)

* Update FileSystemInfo.xml

Changed summary for FileSystemInfo.LinkTarget

* Update FileSystemInfo.xml

Addressed review changes and added value

* Update FileSystemInfo.xml

Removed symbolic word

Author: sabarish98

xml/System.IO/FileSystemInfo.xml

@@ -1318,9 +1318,8 @@ The `Extension` property returns the <xref:System.IO.FileSystemInfo> extension,
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>If this <see cref="T:System.IO.FileSystemInfo" /> instance represents a link, returns the link target's path.
-            If a link does not exist in <see cref="P:System.IO.FileSystemInfo.FullName" />, or this instance does not represent a link, returns <see langword="null" />.</summary>
-        <value>To be added.</value>
+        <summary>Gets the target path of the link located in <see cref="P:System.IO.FileSystemInfo.FullName" />, or <see langword="null" /> if this <see cref="T:System.IO.FileSystemInfo" /> instance doesn't represent a link.</summary>
+        <value>The target path of the link located in <see cref="P:System.IO.FileSystemInfo.FullName" />, or <see langword="null" /> if this <see cref="T:System.IO.FileSystemInfo" /> instance doesn't represent a link.</value>
         <remarks>Symbolic links and junctions are the types of links this API can resolve.</remarks>
         <related type="Article" href="/windows/win32/fileio/symbolic-links">Windows Developer - Symbolic Links</related>
         <related type="Article" href="/windows/win32/fileio/reparse-points-and-file-operations">Windows Developer - Reparse Points and File Operations</related>