Fix incorrect path matching when calculating module specifier

Author: sheetalkamat

src/compiler/moduleSpecifiers.ts

@@ -448,7 +448,7 @@ namespace ts.moduleSpecifiers {
                         startsWith(relativeToBaseUrl, prefix) &&
                         endsWith(relativeToBaseUrl, suffix) ||
                         !suffix && relativeToBaseUrl === removeTrailingDirectorySeparator(prefix)) {
-                        const matchedStar = relativeToBaseUrl.substr(prefix.length, relativeToBaseUrl.length - suffix.length);
+                        const matchedStar = relativeToBaseUrl.substr(prefix.length, relativeToBaseUrl.length - suffix.length - prefix.length);
                         return key.replace("*", matchedStar);
                     }
                 }