Minor typo fixed (#7959)

Author: TommiPrami

builds/install/arch-specific/win32/FirebirdInstallSupportFunctions.inc

@@ -17,7 +17,7 @@
  Helper functions for FB installer
 
  These are / ought to be fairly generic
- It makes more sense if they are independant functions - ie, they don't
+ It makes more sense if they are independent functions - ie, they don't
  call other functions in the script and they don't need to know about the
  install script itself.
 
@@ -53,7 +53,7 @@ Function Prototypes
   function GetInstalledVersion(BinaryFile: String): Array of Integer;
   function ConvertIBVerStrToFbVerStr( VerStr: String) : String;
   function GetRegistryEntry(RegKey, RegEntry: string): String;
-	
+
  *)
 
 (*