Use placeholders for "devtools_request_url" string
The string "devtools_request_url" currently doesn't use placeholders and therefore reads
<a0></a0> rewritten to <a1></a1> and only provides an example in the string description. That makes it a bit less convenient to translate and also it's inconsistent with how we usually insert text into translatable strings. Therefore we should use proper placeholders.
What to change
Change "devtools_request_url" string from
<a0></a0> rewritten to <a1></a1> to
<a0>$original$</a0> rewritten to <a1>$rewritten$</a1> and move the example from the string description to the placeholder example.