Update CONTRIBUTORS.md, adding myself

mhillenbrand · mhillenbrand · commit d7c1677c20c3 · 2020-05-12T11:09:28.000+02:00
Signed-off-by: Marius Hillenbrand &lt;mhillen@linux.ibm.com&gt;
diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
@@ -183,4 +183,6 @@ In chronological order:
 
 * Rajalakshmi Srinivasaraghavan <https://github.com/RajalakshmiSR>
   * [2020-04-15] Half-precision GEMM for bfloat16
-  
+
+* Marius Hillenbrand <https://github.com/mhillenibm>
+  * [2020-05-12] Revise dynamic architecture detection for IBM z
