Fix CPU name

doc.zih.tu-dresden.de/docs/archive/system_taurus.md

@@ -37,7 +37,7 @@ users and the ZIH.
 ## Island 2 Phase 2 - Intel Haswell CPUs + NVIDIA K80 GPUs
 
 - 64 nodes, each with
-    - 2 x Intel(R) Xeon(R) CPU E5-E5-2680 v3 (12 cores) @ 2.50 GHz, Multithreading disabled
+    - 2 x Intel(R) Xeon(R) CPU E5-2680 v3 (12 cores) @ 2.50 GHz, Multithreading disabled
     - 64 GB RAM (2.67 GB per core)
     - 128 GB local memory on SSD
     - 4 x NVIDIA Tesla K80 (12 GB GDDR RAM) GPUs