Fix copy-paste Dependabot error (#48)

.github/dependabot.yml

@@ -7,7 +7,7 @@ updates:
       interval: "weekly"
 
   - package-ecosystem: "nuget"
-    directory: "/ApiSurface"
+    directory: "/"
     schedule:
       interval: "weekly"
     ignore:

README.md

@@ -204,6 +204,9 @@ The motivating example is again ahead-of-time compilation: we wish to avoid the
 
 RestEase is complex, and handles a lot of different stuff.
 
+* If you set the `BaseAddress` on your input `HttpClient`, make sure to end with a trailing slash
+  on any trailing directories (so `"blah/foo/"` rather than `"blah/foo"`).
+  We combine URIs using `UriKind.Relative`, so without a trailing slash, the last component may be chopped off.
 * Parameters are serialised solely with `ToString`, and there's no control over this;
   nor is there control over encoding in any sense.
 * Deserialisation follows the same logic as the `JsonParse` generator,