Fix link to Hash interface (#380)

Author: trivikr

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/ServiceGenerator.java

@@ -212,8 +212,9 @@ private void generateClientDefaults() {
             writer.writeDocs("The HTTP handler to use. Fetch in browser and Https in Nodejs.");
             writer.write("requestHandler?: __HttpHandler;\n");
 
+            writer.addImport("Hash", "__Hash", "@aws-sdk/types");
             writer.addImport("HashConstructor", "__HashConstructor", "@aws-sdk/types");
-            writer.writeDocs("A constructor for a class implementing the @aws-sdk/types.Hash interface \n"
+            writer.writeDocs("A constructor for a class implementing the {@link __Hash} interface \n"
                              + "that computes the SHA-256 HMAC or checksum of a string or binary buffer.\n"
                              + "@internal");
             writer.write("sha256?: __HashConstructor;\n");

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/integration/AddChecksumRequiredDependency.java

@@ -60,8 +60,9 @@ public void addConfigInterfaceFields(
                 + "@internal");
         writer.write("streamHasher?: __StreamHasher<Readable> | __StreamHasher<Blob>;\n");
 
+        writer.addImport("Hash", "__Hash", "@aws-sdk/types");
         writer.addImport("HashConstructor", "__HashConstructor", "@aws-sdk/types");
-        writer.writeDocs("A constructor for a class implementing the @aws-sdk/types.Hash interface \n"
+        writer.writeDocs("A constructor for a class implementing the {@link __Hash} interface \n"
                 + "that computes MD5 hashes.\n"
                 + "@internal");
         writer.write("md5?: __HashConstructor;\n");