Add the 1.0.0-alpha2 schema

Signed-off-by: Ricardo Zanini <[email protected]>

Author: ricardozanini

_redirects

@@ -2,4 +2,4 @@
 #       https://docs.netlify.com/routing/redirects/redirect-options/
 /schemas/previous/* /schemas/0.8/:splat    200
 /schemas/latest/* /schemas/0.9/:splat    200
-/schemas/snapshot/* /schemas/1.0.0-alpha1/:splat    200
+/schemas/snapshot/* /schemas/1.0.0-alpha2/:splat    200