Corrections

Corrections are marked with green.

Puzzle No.	Correction
2	Validation key: 375
4	Validation key: 939
11	Validation key: 480
20	(the 3rd paragraph)
22	Validation key: 281
27	Validation key: 234
29
31	DNXBAAOOIUSMETSTAESETHN
48	Validation key: 295
49
53	(added one more empty dot)
54
68	Validation key: 671
86	Validation key: 361
88
93
94
95	Validation key: 329