corrections in package.json

Author: KateChe31

package.json

@@ -11,7 +11,7 @@
     "brain-calc": "bin/brain-calc.js",
     "brain-gcd": "bin/brain-gcd.js",
     "brain-progression": "bin/brain-progression.js",
-    "btain-prime": "bin/brain-prime.js"
+    "brain-prime": "bin/brain-prime.js"
   },
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"