fix: tmpl .386 -> .I386

Template key can't start with a number.

Refs #5186

internal/tmpl/tmpl.go

@@ -68,7 +68,7 @@ const (
 	osKey        = "Os"
 	arch         = "Arch"
 	amd64        = "Amd64"
-	go386        = "386"
+	go386        = "I386"
 	arm          = "Arm"
 	arm64        = "Arm64"
 	mips         = "Mips"

internal/tmpl/tmpl_test.go

@@ -58,6 +58,10 @@ func TestWithArtifact(t *testing.T) {
 		"6":                                   "{{.Arm}}",
 		"softfloat":                           "{{.Mips}}",
 		"v3":                                  "{{.Amd64}}",
+		"sse2":                                "{{.I386}}",
+		"power8":                              "{{.Ppc64}}",
+		"rva22u64":                            "{{.Riscv64}}",
+		"v8.0":                                "{{.Arm64}}",
 		"1.2.3":                               "{{.Version}}",
 		"v1.2.3":                              "{{.Tag}}",
 		"1-2-3":                               "{{.Major}}-{{.Minor}}-{{.Patch}}",
@@ -110,13 +114,17 @@ func TestWithArtifact(t *testing.T) {
 			t.Parallel()
 			result, err := New(ctx).WithArtifact(
 				&artifact.Artifact{
-					Name:    "not-this-binary",
-					Path:    "/tmp/foo.exe",
-					Goarch:  "amd64",
-					Goos:    "linux",
-					Goarm:   "6",
-					Gomips:  "softfloat",
-					Goamd64: "v3",
+					Name:      "not-this-binary",
+					Path:      "/tmp/foo.exe",
+					Goarch:    "amd64",
+					Goos:      "linux",
+					Goarm:     "6",
+					Gomips:    "softfloat",
+					Goamd64:   "v3",
+					Goarm64:   "v8.0",
+					Go386:     "sse2",
+					Goppc64:   "power8",
+					Goriscv64: "rva22u64",
 					Extra: map[string]interface{}{
 						artifact.ExtraBinary: "binary",
 						artifact.ExtraExt:    ".exe",