test: fix json format

fnanni-0 · fnanni-0 · commit 30092177a2be · 2021-04-23T11:36:38.000-03:00
diff --git a/.env.example b/.env.example
@@ -1 +1 @@
-PRIVATE_KEYS='{"sokol-fork": <private key>, "xdai": <private key>}'
+PRIVATE_KEYS='{"sokol-fork": "<private key>", "xdai": "<private key>"}'

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-PRIVATE_KEYS='{"sokol-fork": <private key>, "xdai": <private key>}'`
	`1`	`+PRIVATE_KEYS='{"sokol-fork": "<private key>", "xdai": "<private key>"}'`