Fix strings solution

ledsun · ledsun · commit 810f4811c81c · 2020-02-05T12:54:25.000+09:00
Creating variables in problems and not using variables in solutions is confusing.
diff --git a/solutions/strings/index.js b/solutions/strings/index.js
@@ -1 +1,2 @@
-console.log('this is a string')
+const someString = 'this is a string'
+console.log(someString)

Original file line number	Diff line number	Diff line change
`@@ -1 +1,2 @@`
`1`		`-console.log('this is a string')`
	`1`	`+const someString = 'this is a string'`
	`2`	`+console.log(someString)`