tpl: Add strings.Repeat

docs/content/en/functions/strings.Repeat.md

@@ -0,0 +1,31 @@
+---
+title: strings.Repeat
+# linktitle:
+description: Returns a string consisting of count copies of the string s.
+godocref:
+date: 2018-05-31
+publishdate: 2018-05-31
+lastmod: 2018-05-31
+categories: [functions]
+menu:
+  docs:
+    parent: "functions"
+keywords: [strings]
+signature: ["strings.Repeat INPUT COUNT"]
+workson: []
+hugoversion:
+relatedfuncs: []
+deprecated: false
+---
+
+`strings.Repeat` provides the Go [`strings.Repeat`](https://golang.org/pkg/strings/#Repeat) function for Hugo templates. It takes a string and a count, and returns a string with consisting of count copies of the string argument.
+
+```
+{{ strings.Repeat "yo" 3 }} → "yoyoyo"
+```
+
+`strings.Repeat` *requires* the second argument, which tells the function how many times to repeat the first argument; there is no default. However, it can be used as a pipeline:
+
+```
+{{ "yo" | strings.Repeat 3 }} → "yoyoyo"
+```