build: reinstall solidity-coverage

chore: fix code style error in .prettierrc

.prettierrc

@@ -1,7 +1,7 @@
 {
   "arrowParens": "avoid",
   "bracketSpacing": true,
-  "endOfLine":"auto",
+  "endOfLine": "auto",
   "printWidth": 120,
   "singleQuote": false,
   "tabWidth": 2,