Renamed BN mult CorporationSoftCap to CorporationSoftcap

Replaced all instances of "CorporationSoftCap" in src/ with
"CorporationSoftcap". If files outside of src/ must be changed, I
do not know what those would be.

src/BitNode/BitNodeMultipliers.ts

@@ -242,7 +242,7 @@ export interface IBitNodeMultipliers {
   /**
    * Influences corporation dividends.
    */
-  CorporationSoftCap: number;
+  CorporationSoftcap: number;
 
   // Index signature
   [key: string]: number;