_content/security/vuln: improve documentation on escaped module paths

Fixes incorrect reference to "EncodePath" and makes description of
each endpoint more precise.

Change-Id: I1af91dff12a626a75184ce8f0d7bc3e648ae1333
Reviewed-on: https://go-review.googlesource.com/c/website/+/467775
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Julie Qiu <julieqiu@google.com>
Run-TryBot: Tatiana Bradley <tatianabradley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Tatiana Bradley <tatianabradley@google.com>
diff --git a/_content/security/vuln/database.md b/_content/security/vuln/database.md
index 1f8fce9..ef6e191 100644
--- a/_content/security/vuln/database.md
+++ b/_content/security/vuln/database.md
@@ -56,16 +56,16 @@
 - `$module` is a module path
 - `$vuln` is a Go vulnerability ID (for example, GO-2021-1234)
 
-To avoid various character set issues, the `$module` element is encoded
-using [module.EncodePath](https://pkg.go.dev/golang.org/x/mod/module/#EncodePath).
+To avoid various character set issues, the `$module` element is escaped
+using [module.EscapePath](https://pkg.go.dev/golang.org/x/mod/module#EscapePath).
 
 The endpoints are:
 
 - `$base/index.json`
-   List of module paths in the database mapped to its last modified timestamp ([link](https://vuln.go.dev/index.json)).
+   A map from module paths to their last modified timestamp ([link](https://vuln.go.dev/index.json)).
 
 - `$base/$module.json`
-   List of vulnerability entries for that module ([example](https://vuln.go.dev/golang.org/x/crypto.json)).
+   A list of all vulnerability reports for the escaped module path `$module` ([example](https://vuln.go.dev/golang.org/x/crypto.json), [escaped example](https://vuln.go.dev/github.com/!robots!and!pencils/go-saml.json)).
 
 - `$base/ID/$vuln.json`
    An individual Go vulnerability report ([example](https://vuln.go.dev/ID/GO-2022-0191.json)).