Fix broken links in size_t reference

Author: per1234

Language/Variables/Data Types/size_t.adoc

@@ -17,7 +17,7 @@ subCategories: [ "Data Types" ]
 
 [float]
 === Description
-`size_t` is a data type capable of representing the size of any object in bytes. Examples of the use of `size_t` are the return type of link:../../Utilities/sizeof[sizeof()] and link:../../../Functions/Communication/Serial/print[Serial.print()].
+`size_t` is a data type capable of representing the size of any object in bytes. Examples of the use of `size_t` are the return type of link:../../utilities/sizeof[sizeof()] and link:../../../functions/communication/serial/print[Serial.print()].
 [%hardbreaks]
 
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