Link from to the issue being worked around.

Author: amartini51

Sources/TSPL/TSPL.docc/ReferenceManual/LexicalStructure.md

@@ -126,6 +126,14 @@ but `` `class` `` is valid.
 The backticks aren't considered part of the identifier;
 `` `x` `` and `x` have the same meaning.
 
+<!--
+The paragraph above produces a link-resolution warning
+because of a known issue with ` in code voice.
+
+https://github.com/apple/swift-book/issues/71
+https://github.com/apple/swift-markdown/issues/93
+-->
+
 Inside a closure with no explicit parameter names,
 the parameters are implicitly named `$0`, `$1`, `$2`, and so on.
 These names are valid identifiers within the scope of the closure.
@@ -143,6 +151,15 @@ of the <doc:Attributes> chapter.
   the section name isn't title case so it doesn't necessarily look like a title.
 -->
 
+<!--
+The formal grammar below for 'identifier'
+produces a link-resolution warning
+because of a known issue with ` in code voice.
+
+https://github.com/apple/swift-book/issues/71
+https://github.com/apple/swift-markdown/issues/93
+-->
+
 > Grammar of an identifier:
 >
 > *identifier* → *identifier-head* *identifier-characters*_?_