Merge commit 'b9bd35d72e' as 'docs'

docs/content/en/functions/path.Ext.md

@@ -0,0 +1,29 @@
+---
+title: path.Ext
+description: Ext returns the file name extension of a path.
+godocref:
+date: 2018-11-28
+publishdate: 2018-11-28
+lastmod: 2018-11-28
+categories: [functions]
+menu:
+  docs:
+    parent: "functions"
+keywords: [path, ext, extension]
+signature: ["path.Ext PATH"]
+workson: []
+hugoversion: "0.40"
+relatedfuncs: [path.Base, path.Dir, path.Split]
+deprecated: false
+---
+
+`path.Ext` returns the file name extension `PATH`.
+
+The extension is the suffix beginning at the final dot in the final slash-separated element `PATH`;
+it is empty if there is no dot.
+
+**Note:** On Windows, `PATH` is converted to slash (`/`) separators.
+
+```
+{{ path.Ext "a/b/c/news.html" }} → ".html"
+```