VQkit 1.1.15 - Anode example correction

The anode specific-capacity prompt uses examples from:
A. Rajkamal and R. Thapa, Advanced Materials Technologies 4 (2019) 1900307.
DOI: 10.1002/admt.201900307

Examples:
- Graphite: enter delithiated host C6; maximum lithiation LiC6 -> ~372 mAh/g.
- SWCNT example: enter delithiated host C2; LiC2 -> ~1116 mAh/g.

Cathode-only examples such as LiFePO4 are no longer shown in the anode workflow.
