Link to stdlib macros that replace special literals (#142)

Because the macros' names aren't exactly the same as how we referred to
the special literals -- one has pound signs and the other gets trailing
`(_:)` in some places -- and because the lists aren't that long, I made
these as two parallel lists.

Author: amartini51

TSPL.docc/ReferenceManual/Expressions.md

@@ -596,15 +596,22 @@ or a playground literal.
 
 > Note:
 > Prior to Swift 5.9,
-> the following special literals were recognized,
-> which are now implemented as macros in the Swift standard library:
+> the following special literals were recognized:
 > `#column`,
 > `#dsohandle`,
 > `#fileID`,
 > `#filePath`,
 > `#file`,
 > `#function`,
 > and `#line`.
+> These are now implemented as macros in the Swift standard library:
+> [`column`](https://developer.apple.com/documentation/swift/column),
+> [`dsohandle`](https://developer.apple.com/documentation/swift/dsohandle),
+> [`fileID`](https://developer.apple.com/documentation/swift/fileID),
+> [`filePath`](https://developer.apple.com/documentation/swift/filePath),
+> [`file`](https://developer.apple.com/documentation/swift/file),
+> [`function`](https://developer.apple.com/documentation/swift/function),
+> and [`line`](https://developer.apple.com/documentation/swift/line).
 
 <!--
   - test: `pound-file-flavors`

TSPL.docc/ReferenceManual/LexicalStructure.md

@@ -371,6 +371,7 @@ so they must be escaped with backticks in that context.
   `#elseif`,
   `#else`,
   `#endif`,
+  `#fileLiteral`,
   `#if`,
   `#imageLiteral`,
   `#keyPath`,
@@ -379,18 +380,26 @@ so they must be escaped with backticks in that context.
 
 > Note:
 > Prior to Swift 5.9,
-> the following keywords are reserved,
-> which are now implemented as macros in the Swift standard library:
+> the following keywords were reserved:
 > `#column`,
 > `#dsohandle`,
 > `#error`,
 > `#fileID`,
-> `#fileLiteral`,
 > `#filePath`,
 > `#file`,
 > `#function`,
 > `#line`,
 > and `#warning`.
+> These are now implemented as macros in the Swift standard library:
+> [`column`](https://developer.apple.com/documentation/swift/column),
+> [`dsohandle`](https://developer.apple.com/documentation/swift/dsohandle),
+> [`error(_:)`](https://developer.apple.com/documentation/swift/error(_:)),
+> [`fileID`](https://developer.apple.com/documentation/swift/fileID),
+> [`filePath`](https://developer.apple.com/documentation/swift/filePath),
+> [`file`](https://developer.apple.com/documentation/swift/file),
+> [`function`](https://developer.apple.com/documentation/swift/function),
+> [`line`](https://developer.apple.com/documentation/swift/line),
+> and [`warning(_:)`](https://developer.apple.com/documentation/swift/warning(_:)).
 
 <!--
   Token.py includes #assert,