harmonise regulator type string in calculator-->Regulators

Description

The regulator type is differently named in different comboboxes in the calculator-->Regulator section:

• One combobox says "Standard type"
• the other combobox prints "separate sense pin"

While I know thats the same and the according picture shows a good principle diagram it could confuse electronic beginners. (And evryone was a beginner some time ago....).

Steps to reproduce

1. open calculator tools, open "Regulators" section
2. click "TYpe"-combobox in the top left (picture 1), read "Standard type"
3. click "Add Regulator" button, than "Type combobox" (picture 2): now you have to choose "Separate sense pin" instead of standard

KiCad Version

Application: KiCad (64-bit)

Version: (6.99.0-3131-ge82ff4de73), release build

Libraries:
	wxWidgets 3.1.7
	FreeType 2.11.1
	HarfBuzz 4.2.0
	FontConfig 2.14.0

Platform: Windows 10 (build 19044), 64-bit edition, 64 bit, Little endian, wxMSW

	wxWidgets: 3.1.7 (wchar_t,wx containers)
	Boost: 1.79.0
	OCC: 7.6.0
	Curl: 7.83.1-DEV
	ngspice: 37
	Compiler: Visual C++ 1929 without C++ ABI

Build settings:
	KICAD_SPICE=ON