internal/history: document Go 1.18.1 and Go 1.17.9

Change-Id: I360704790e33ef88d0c38d0e0e986c6e8780d27f
Reviewed-on: https://go-review.googlesource.com/c/website/+/399825
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
diff --git a/internal/history/release.go b/internal/history/release.go
index e36dbcf..24cd299 100644
--- a/internal/history/release.go
+++ b/internal/history/release.go
@@ -16,13 +16,22 @@
 var Releases = []*Release{
 	{
 		Date: Date{2022, 4, 12}, Version: Version{1, 18, 1},
-		Future:   true,
-		Security: &FixSummary{Quantifier: "a", Components: []template.HTML{"the standard library"}},
+		Security: &FixSummary{
+			Packages: []string{"crypto/elliptic", "crypto/x509", "encoding/pem"},
+		},
+		Bug: &FixSummary{
+			Components: []template.HTML{"the compiler", "linker", "runtime", "the <code>go</code> command", "vet"},
+			Packages:   []string{"bytes", "crypto/x509", "go/types"},
+		},
 	},
 	{
 		Date: Date{2022, 4, 12}, Version: Version{1, 17, 9},
-		Future:   true,
-		Security: &FixSummary{Quantifier: "a", Components: []template.HTML{"the standard library"}},
+		Security: &FixSummary{
+			Packages: []string{"crypto/elliptic", "encoding/pem"},
+		},
+		Bug: &FixSummary{
+			Components: []template.HTML{"the linker", "runtime"},
+		},
 	},
 	{
 		Date: Date{2022, 3, 15}, Version: Version{1, 18, 0},