[NFC] improve regex's documentation style

Author: WowbaggersLiquidLunch

Sources/PackageLoading/ToolsVersionLoader.swift

@@ -174,10 +174,10 @@ public class ToolsVersionLoader: ToolsVersionLoaderProtocol {
         return (versionSpecifier, splitted.count == 1 ? [] : Array(splitted[1]))
     }
 
-    /// The regex to match swift tools version specification:
-    /// * It should start with `//` followed by any amount of _horizontal_ whitespace characters.
-    /// * Following that it should contain the case insensitive string `swift-tools-version:`.
-    /// * The text between the above string and `;` or string end becomes the tools version specifier.
+    /// The regex to match swift tools version specification
+    /// - It should start with `//` followed by any amount of _horizontal_ whitespace characters.
+    /// - Following that it should contain the case insensitive string `swift-tools-version:`.
+    /// - The text between the above string and `;` or string end becomes the tools version specifier.
     static let regex = try! NSRegularExpression(
         pattern: "^//\\h*?swift-tools-version:(.*?)(?:;.*|$)",
         options: [.caseInsensitive])