Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

```
git subtree add --prefix=docs/ https://github.com/gohugoio/hugoDocs.git master --squash
```

Closes #11925

docs/content/en/functions/reflect/IsSlice.md

@@ -0,0 +1,18 @@
+---
+title: reflect.IsSlice
+description: Reports whether the given value is a slice.
+categories: []
+keywords: []
+action:
+  aliases: []
+  related:
+    - functions/reflect/IsMap
+  returnType: bool
+  signatures: [reflect.IsSlice INPUT]
+aliases: [/functions/reflect.isslice]
+---
+
+```go-html-template
+{{ reflect.IsSlice (slice 1 2 3) }} → true
+{{ reflect.IsSlice "yo" }} → false
+```