Unify aarch64 arch names in documentation

This patch addresses the confusion in our documentation and errata by unifying different aliases for our architecture names.  For example, armv8a and arm64-v8a refers to the same arch, as armv8.2-a and arm64-v8.2-a are.

Resolves: COMPMID-4997
Change-Id: Id08f7a27363abbd2de75b2db96a91417e559417a
Signed-off-by: Gunes Bayir <gunes.bayir@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/7224
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Marquez Tello <pablo.tello@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/docs/user_guide/errata.dox b/docs/user_guide/errata.dox
index 56a0e78..ccaf4d8 100644
--- a/docs/user_guide/errata.dox
+++ b/docs/user_guide/errata.dox
@@ -78,12 +78,12 @@
         - Arm® Mali™ DDK r1p0 - r8p0, and
         - Linux kernel >= 4.4
 
-- (COMPMID-5137) On Android with arm64-v8a/arm64-v8.2-a architecture, Arm® Neon™ validation tests can fail when compiled using Android Ndk
+- (COMPMID-5137) On Android with armv8a/armv8.2-a architecture, Arm® Neon™ validation tests can fail when compiled using Android Ndk
   >= r18b in debug mode (https://github.com/android/ndk/issues/1135).
     - Versions Affected: >= v19.11
     - OSs Affected: Android
     - Conditions:
-        - arm64-v8a/arm64-v8.2-a architecture, and
+        - armv8a/armv8.2-a architecture, and
         - Compiled using Android NDK >= r18b in debug mode.
 
 - (COMPMID-4288) An issue has been identified with CLCast.