fix Edgecore vOLT model name in gitbook documents

Change-Id: Ie5b1349586d3947b0660c584b9efd80047be4d32
diff --git a/prereqs/hardware.md b/prereqs/hardware.md
index dabfe11..6f1173e 100644
--- a/prereqs/hardware.md
+++ b/prereqs/hardware.md
@@ -84,7 +84,7 @@
             * Celestica Tellion GP-1204
             * Movistar ONU (with CPE included) (manifactured by Telefonica: <http://www.movistar.es/particulares/movil/moviles/hgu>)
     * **XGS-PON**
-        * **OLT**: EdgeCore ASFVOLT16 (for more info <bartek_raszczyk@edge-core.com>)
+        * **OLT**: Edgecore ASXvOLT16 (for more info <bartek_raszczyk@edge-core.com>)
             * Compatible **OLT optics**
                 * Hisense/Ligent: LTH7226-PC, LTH7226-PC+
                 * Source Photonics: XPP-XG2-N1-CDFA