Fixed filename casing in canary API

refs: 0ef5a5c97a

- As per the previous commit, our mixed filename casing inadvertently resulted in a bug
- The casing in the codebase is meant to be kebab-case always, so fixing this everywhere that's relevant to the API whilst there's a good reason

core/server/api/canary/index.js

@@ -78,7 +78,7 @@ module.exports = {
     },
 
     get membersStripeConnect() {
-        return shared.pipeline(require('./membersStripeConnect'), localUtils);
+        return shared.pipeline(require('./members-stripe-connect'), localUtils);
     },
 
     get members() {
@@ -98,7 +98,7 @@ module.exports = {
     },
 
     get memberSigninUrls() {
-        return shared.pipeline(require('./memberSigninUrls.js'), localUtils);
+        return shared.pipeline(require('./member-signin-urls.js'), localUtils);
     },
 
     get labels() {

core/server/api/canary/utils/serializers/output/index.js

@@ -74,7 +74,7 @@ module.exports = {
     },
 
     get member_signin_urls() {
-        return require('./member-signin_urls');
+        return require('./member-signin-urls');
     },
 
     get identities() {