DOCSP-32174 Add API link (#26)

(cherry picked from commit 9d16870)

Author: jordan-smith721

snooty.toml

@@ -36,6 +36,7 @@ string-data-type = "``string``"
 int-data-type = "``integer``"
 not-available = "N/A"
 package = "MongoDB.EntityFrameworkCore"
+api-root = "https://mongodb.github.io/mongo-efcore-provider/8.0.0/api"
 
 [[banners]]
 targets = ["index.txt"]

source/index.txt

@@ -9,6 +9,7 @@
    /fundamentals
    /limitations
    /issues-and-help
+   API Documentation <{+api-root+}>
 
 Introduction
 ------------
@@ -41,6 +42,12 @@ Quick Reference
 See driver syntax examples for common MongoDB commands in the
 :ref:`Quick Reference <entity-framework-quick-reference>` section.
 
+API Documentation
+-----------------
+
+For detailed information about types and methods in the {+provider-short+}, see
+the `{+provider-short+} API documentation <{+api-root+}>`__.
+
 Compatibility
 -------------