docs: Add documentation for hasPrefix template func

Fixes #2039

diff --git a/docs/content/templates/functions.md b/docs/content/templates/functions.md
index 0573978de181e9a9bf8339b7c729dc840d8f48f3..8e3fdd9539133d03c25302185a5b7cf4d41769ee 100644 (file)
--- a/docs/content/templates/functions.md
+++ b/docs/content/templates/functions.md
@@ -610,6 +610,12 @@ e.g.
 * `{{substr "BatMan" 0 -3}}` → "Bat"
 * `{{substr "BatMan" 3 3}}` → "Man"
 
+### hasPrefix
+
+HasPrefix tests whether a string begins with prefix.
+
+* `{{ hasPrefix "Hugo" "Hu" }}` → true
+
 ### title
 Converts all characters in string to titlecase.