style: format code with Gofumpt and Prettier

This commit fixes the style issues introduced in 8c89bff according to the output
from Gofumpt and Prettier.

Details: #2579

hack/cspell/main.go

@@ -17,9 +17,9 @@ type Override struct {
 }
 
 type CspellConfig struct {
-	Import      []string  `json:"import"`
-	IgnorePaths []string  `json:"ignorePaths"`
-	IgnoreWords []string  `json:"ignoreWords,omitempty"`
+	Import      []string   `json:"import"`
+	IgnorePaths []string   `json:"ignorePaths"`
+	IgnoreWords []string   `json:"ignoreWords,omitempty"`
 	Overrides   []Override `json:"overrides"`
 	Patterns    []Pattern  `json:"patterns,omitempty"`
 }
@@ -281,4 +281,3 @@ func unique(strings []string) []string {
 	sort.Strings(result) // アルファベット順にソート
 	return result
 }
-