fix(bilibili-music): adjust page index calculation to be zero-based

[fllesser]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/nonebot_plugin_parser/matchers/__init__.py	0.00%	1 Missing ⚠️

Files with missing lines	Coverage Δ
src/nonebot_plugin_parser/matchers/__init__.py	51.08% <0.00%> (ø)

... and 3 files with indirect coverage changes

[github-actions]

类型	PIL 耗时(秒)	HTML 耗时(秒)	渲染所用图片总大小(MB)	PIL 导出图片大小(MB)	HTML 导出图片大小(MB)
微博视频	0.01187	0.78342	0.01280	0.03432	0.18050
微博视频2	0.01286	0.80267	0.01280	0.03541	0.18327
微博纯文2	0.03293	0.88226	0.00605	0.12023	0.35956
微博转发纯文	0.07051	1.06764	0.01724	0.24325	0.71448
B站转发动态	0.21466	1.53894	0.37278	0.38265	1.42482
哔哩哔哩动态(包含emoji)	0.26797	1.84729	0.01244	0.18507	0.55960
微博图集(2张)	0.33591	1.13865	4.88308	0.64458	2.21195
微博图集(4张)	0.40491	1.70333	2.34023	0.72816	2.45148
B站动态	0.51971	3.12544	0.00653	1.34777	3.51336
微博图集(9张)	1.18996	2.06094	10.98936	0.98579	3.08158