Update JS string content - added backticks ( `` ) (#6767)

* Update string@1RcwBHU3jzx0YxxUGZic4.md

added backtick ( `` )

* Update src/data/roadmaps/javascript/content/string@1RcwBHU3jzx0YxxUGZic4.md

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Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

src/data/roadmaps/javascript/content/string@1RcwBHU3jzx0YxxUGZic4.md

@@ -1,6 +1,6 @@
 # String
 
-String is a primitive type that holds a sequence of characters. String in Javascript is written within a pair of single quotation marks `''` or double quotation marks `""`. Both quotes can be used to contain a string but only if the starting quote is the same as the end quote.
+String is a primitive type that holds a sequence of characters. String in Javascript is written within a pair of single quotation marks `''`, double quotation marks `""`, or backticks ` `` ` (template literals). All types of quotes can be used to contain a string but only if the starting quote is the same as the end quote.
 
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