fix mode (#46)

Author: ndthanhdev

app/src/utils/envs.ts

@@ -1,5 +1,5 @@
 const buildNumber = process.env.GATSBY_BUILD_NUMBER || "local";
 const rev = process.env.GATSBY_REV || "local";
-const mode = process.env.GATSBY_LOCAL || "local";
+const mode = process.env.GATSBY_MODE || "local";
 
 export const envs = { buildNumber, rev, mode };