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-rw-r--r--docs/content/en/functions/upper.md4
1 files changed, 3 insertions, 1 deletions
diff --git a/docs/content/en/functions/upper.md b/docs/content/en/functions/upper.md
index c7d523217..02f4cd578 100644
--- a/docs/content/en/functions/upper.md
+++ b/docs/content/en/functions/upper.md
@@ -11,7 +11,9 @@ menu:
docs:
parent: "functions"
toc:
-signature: ["upper INPUT"]
+signature:
+ - "upper INPUT"
+ - "strings.ToUpper INPUT"
workson: []
hugoversion:
relatedfuncs: []