zh-CN: add mrmagic2020 to maintainers list

[mrmagic2020]

Applying for issue(s):

• None

Add myself to the maintainers' list.

[github-actions]

Check results

For details go to Translation Check -> Details. Expand Run checks build stage and use the build-in search to find your language (e.g. pl-PL)

	Missing The translation is not added to translation file. (e.g. STR_9999 is in en-GB but is not available in given language)	Not needed The translation file contains entries that are not in en-GB and should be removed (e.g. STR_9999 exists in given language but is not in en-GB)	Same The translation and source string is exactly the same. (e.g. STR_9999 is Umbrella in both en-GB and given language). This may be desired in some cases (e.g. April is the same in English and German)

Other translations

	Missing The translation is not added to translation file. (e.g. STR_9999 is in en-GB but is not available in given language)	Not needed The translation file contains entries that are not in en-GB and should be removed (e.g. STR_9999 exists in given language but is not in en-GB)	Same The translation and source string is exactly the same. (e.g. STR_9999 is Umbrella in both en-GB and given language). This may be desired in some cases (e.g. April is the same in English and German)
ar-EG	98	2	1913
ca-ES	12	1	117
cs-CZ	417	0	246
da-DK	7	0	534
de-DE	7	1	352
en-US	3381	0	390
eo-ZZ	0	1	89
es-ES	1	1	304
fi-FI	16	1	115
fr-CA	3964	0	0
fr-FR	7	1	163
hu-HU	0	0	119
it-IT	15	1	342
ja-JP	333	1	607
ko-KR	0	1	194
nb-NO	7	0	483
nl-NL	1	13	451
pl-PL	175	1	380
pt-BR	0	1	146
ru-RU	1339	0	111
sv-SE	90	1	347
tr-TR	396	1	395
uk-UA	19	34	1138
vi-VN	255	3	3227
zh-CN	0	1	35
zh-TW	150	0	331