docs: use official styling for JS

Release-Notes: skip
Change-Id: Ic7060d794af73946cfc5b488a489812cfa59502c
diff --git a/Documentation/user-upload.txt b/Documentation/user-upload.txt
index 2bfc62d..8c51207 100644
--- a/Documentation/user-upload.txt
+++ b/Documentation/user-upload.txt
@@ -340,7 +340,7 @@
 To avoid confusion in parsing the git ref, at least the following characters
 must be percent-encoded: " %^@.~-+_:/!". Note that some of the reserved
 characters (like tilde) are not escaped in the standard URL encoding rules,
-so a language-provided function (e.g. encodeURIComponent(), in javascript)
+so a language-provided function (e.g. encodeURIComponent(), in JavaScript)
 might not suffice. To be safest, you might consider percent-encoding all
 non-alphanumeric characters (and all multibyte UTF-8 code points).