[ARM][wwwdocs]: Document Armv8.1-M, Helium Intrinsics and Cortex-M55 changes.

[Gerald Pfeifer]

On Fri, 15 May 2020, Kyrylo Tkachov wrote:
>> From: Srinath Parvathaneni <Srinath.Parvathaneni@arm.com>
>> M-profile related changes in GCC-10.
> Ok.

This brought some problems with that page which I addressed per the
follow-up patch below.

(I am not sure I would have introduced a one-element list, but kept
that and just fixed markup from <ul>...<ul> to <ul>...</ul>.)

Pushed.

Gerald


commit 93538bdb512831e9e9175b2c5c0bfb1527407b79
Author: Gerald Pfeifer <gerald@pfeifer.com>
Date:   Sat May 16 18:06:54 2020 +0200

    Fix up the latest Arm-related notes (markup, formatting,...).

diff --git a/htdocs/gcc-10/changes.html b/htdocs/gcc-10/changes.html
index 0d9e97f7..ce2efe00 100644
--- a/htdocs/gcc-10/changes.html
+++ b/htdocs/gcc-10/changes.html
@@ -807,12 +807,15 @@ typedef svbool_t pred512 __attribute__((arm_sve_vector_bits(512)));
   <a href="https://developer.arm.com/architectures/cpu-architecture/m-profile">
   Armv8.1-M Mainline</a> Architecture has been added.</li>
   <ul>
-    <li> Armv8.1-M Mainline can be enabled by using the <code>-march=armv8.1-m.main<code> command line option.
-  <ul>
+    <li>Armv8.1-M Mainline can be enabled by using the
+      <code>-march=armv8.1-m.main<code> command-line option.</li>
+  </ul>
   <li>Support for the
   <a href="https://developer.arm.com/architectures/instruction-sets/simd-isas/helium/helium-intrinsics">
-  MVE</a> beta ACLE intrinsics has been added. These intrinsics can be enabled by including the arm_mve.h header file
-  and passing the <code>+mve<code> or <code>+mve.fp<code> option extensions (for example: <code>-march=armv8.1-m.main+mve<code>).</li>
+  MVE</a> beta ACLE intrinsics has been added. These intrinsics can be
+  enabled by including the arm_mve.h header file and passing the
+  <code>+mve<code> or <code>+mve.fp<code> option extensions (for
+  example: <code>-march=armv8.1-m.main+mve<code>).</li>
   <li>Support for the Custom Datapath Extension beta ACLE
   <a href="https://developer.arm.com/docs/101028/0010/custom-datapath-extension">
   intrinsics</a> has been added.</li>