Fix a couple more syntax issues.

Author: ericstj

xml/System.Runtime.InteropServices/GCHandle`1.xml

@@ -200,7 +200,7 @@
         <param name="value">An <see cref="T:System.IntPtr" /> handle to a managed object to create a <see cref="T:System.Runtime.InteropServices.GCHandle`1" /> object from.</param>
         <summary>Returns a new <see cref="T:System.Runtime.InteropServices.GCHandle`1" /> object created from a handle to a managed object.</summary>
         <returns>A new <see cref="T:System.Runtime.InteropServices.GCHandle`1" /> object that corresponds to the value parameter.</returns>
-        <remarks><para><para>This method doesn't validate the provided handle value. The caller must ensure the validity of the handle.</para><para> The <see cref="T:System.IntPtr" /> representation of <see cref="T:System.Runtime.InteropServices.GCHandle`1" /> is not interchangable with <see cref="T:System.Runtime.InteropServices.GCHandle" />.</para><para></para></remarks>
+        <remarks><para>This method doesn't validate the provided handle value. The caller must ensure the validity of the handle.</para><para> The <see cref="T:System.IntPtr" /> representation of <see cref="T:System.Runtime.InteropServices.GCHandle`1" /> is not interchangable with <see cref="T:System.Runtime.InteropServices.GCHandle" />.</para></remarks>
       </Docs>
     </Member>
     <Member MemberName="GetHashCode">

xml/System.Runtime.Intrinsics.X86/Avx512F.xml

@@ -5214,7 +5214,10 @@
       <Docs>
         <param name="value">To be added.</param>
         <param name="mode">To be added.</param>
-        <summary><para>__m256i _mm512_cvt_roundpd_epu32 (__m512d a, int rounding) <para>  VCVTPD2UDQ ymm1, zmm2 {er}&lt;/para&gt;</summary>
+        <summary>
+          <para>__m256i _mm512_cvt_roundpd_epu32 (__m512d a, int rounding)</para>
+          <para>VCVTPD2UDQ ymm1, zmm2 {er}</para>
+        </summary>
         <returns>To be added.</returns>
         <remarks>To be added.</remarks>
       </Docs>