Remove claim that the Link header is semantically equivalent to the HTML link element (#32146)

Remove claim that the Link header is semantically equivalent to the HTML <link> element

Author: jfhr

files/en-us/web/http/headers/link/index.md

@@ -7,7 +7,7 @@ browser-compat: http.headers.Link
 
 {{HTTPSidebar}}
 
-The HTTP **`Link`** entity-header field provides a means for serializing one or more links in HTTP headers. It is semantically equivalent to the HTML {{HTMLElement("link")}} element.
+The HTTP **`Link`** entity-header field provides a means for serializing one or more links in HTTP headers. In many cases, it has the same effect as the HTML {{HTMLElement("link")}} element.
 
 > **Note:** Some browsers do not support the "icon" relation via HTTP ([FF#1185705](https://bugzilla.mozilla.org/show_bug.cgi?id=1185705)). Use HTML `<link rel="icon">` instead.