update title

Author: Jay L. Gao

gh-pages/mkdocs.yml

@@ -66,7 +66,7 @@ nav:
     - Multi-network Configuration: Configure-Multiple-Network-Interfaces.md
     - LTP Configuration Tool: Using-LTP-Config-Tool.md
     - ION Launcher Script: ION-Launcher.md
-    - Knowable Base, Issues & Patches: Known-Issues.md
+    - Knowledge Base, Issues & Patches: Known-Issues.md
     - Standard Operations Procedure: SOP-for-ION.md
   - ION APIs:
     - ION Design & API Overview: ION-Design-and-API-Overview.md