fixture: Upgrations of some packages, with one typo error

1. wont => won't.
2. Update 'semver' from 6.0.0 to 6.3.0.
3. Update 'marked' from 0.6.2 to 0.7.0, this is a fixture for some known
vulnerability. Another will be fixed until
metalsmith/markdown#40 is merged.

Author: Maledong

package-lock.json

@@ -39,7 +39,7 @@
     "jstransformer-handlebars": "1.1.0",
     "junk": "3.1.0",
     "lodash.defaultsdeep": "^4.6.1",
-    "marked": "0.6.2",
+    "marked": "0.7.0",
     "metalsmith": "2.3.0",
     "metalsmith-collections": "0.9.0",
     "metalsmith-discover-helpers": "^0.1.1",
@@ -57,7 +57,7 @@
     "octonode": "^0.9.5",
     "request": "^2.88.0",
     "require-dir": "1.2.0",
-    "semver": "6.0.0",
+    "semver": "6.3.0",
     "st": "1.2.2",
     "strftime": "0.10.0"
   },

package.json

@@ -2,7 +2,7 @@
 
 /**
  * What's this?? It will help you create release blog
- * posts so you wont have to do the tedious work
+ * posts so you won't have to do the tedious work
  * of stitching together data from changelog, shasums etc,
  * but get a more or less complete release blog ready to go.
  *