Reorganize the quick links of frequency related items

Author: jinningwang

_pages/wiki-quicklink.md

@@ -14,7 +14,7 @@
 - [Fast Frequency Response](/wiki/fast-frequency-response)   [Critial Inertia](/wiki/critical-inertia)
 - [Primary Frequency Response](/wiki/primary-frequency-response)  
 - [Frequency Response](/wiki/frequnecy-response)   [Primary Control](/wiki/primary-control)  
-- [Secondary Control](/wiki/secondary-control)   [Automatic Generation Control (AGC)](/wiki/automatic-generation-control)   
+- [Secondary Control](/wiki/secondary-control)   [Automatic Generation Control (AGC)](/wiki/automatic-generation-control)  
 - [Tertiary Control](/wiki/tertiary-control)
 
 **Reserve**