Fix broken rules_proto link.

With the period as part of the href, I get a 404 when browsing from https://docs.bazel.build/versions/master/skylark/lib/ProtoInfo.html.

PiperOrigin-RevId: 341627402

src/main/java/com/google/devtools/build/lib/starlarkbuildapi/ProtoInfoApi.java

diff --git a/src/main/java/com/google/devtools/build/lib/starlarkbuildapi/ProtoInfoApi.java b/src/main/java/com/google/devtools/build/lib/starlarkbuildapi/ProtoInfoApi.java
index 0ab92c3..ce1fad6 100644
--- a/src/main/java/com/google/devtools/build/lib/starlarkbuildapi/ProtoInfoApi.java
+++ b/src/main/java/com/google/devtools/build/lib/starlarkbuildapi/ProtoInfoApi.java
@@ -31,8 +31,8 @@
             + "../../be/protocol-buffer.html#proto_library\">proto_library.</a>"
             + "<p>"
             + "Please consider using `load(\"@rules_proto//proto:defs.bzl\", \"ProtoInfo\")` "
-            + "to load this symbol from <a href=\"https://github.com/bazelbuild/rules_proto.\">"
-            + "rules_proto</a>"
+            + "to load this symbol from <a href=\"https://github.com/bazelbuild/rules_proto\">"
+            + "rules_proto</a>."
             + "</p>")
 public interface ProtoInfoApi<FileT extends FileApi> extends StructApi {
   /** Provider class for {@link ProtoInfoApi} objects. */