Fix service file names

Author: JordonPhillips

smithy-docgen-core/src/main/java/software/amazon/smithy/docgen/core/DocSymbolProvider.java

@@ -119,7 +119,9 @@ private String getDefinitionFile(ServiceShape serviceShape, Shape shape) {
         if (shape.isMemberShape()) {
             return getDefinitionFile(serviceShape, model.expectShape(shape.getId().withoutMember()));
         }
-        return getDefinitionFile(getShapeName(serviceShape, shape) + ".md");
+        return getDefinitionFile(
+            getShapeName(serviceShape, shape).replaceAll("\\s+", "") + ".md"
+        );
     }
 
     public String getDefinitionFile(String filename) {
@@ -140,7 +142,7 @@ private String getShapeName(ServiceShape serviceShape, Shape shape) {
     }
 
     private String getLinkId(String shapeName) {
-        return shapeName.toLowerCase(Locale.ENGLISH).replaceAll("\\s", "-");
+        return shapeName.toLowerCase(Locale.ENGLISH).replaceAll("\\s+", "-");
     }
 
     // All other shapes don't get generation, so we'll do null checks where this might

smithy-docgen-core/src/test/java/software/amazon/smithy/docgen/core/SmithyDocPluginTest.java

@@ -56,7 +56,7 @@ public void assertDocumentationFiles() {
     }
 
     private void assertServicePageContents(MockManifest manifest) {
-        String servicePage = manifest.expectFileString("/sources/SampleService.md");
+        String servicePage = manifest.expectFileString("/content/SampleService.md");
 
         assertEquals(servicePage, readExpectedPageContent("expected-outputs/SampleService.md"));
     }