[skip ci]Update HtmlFormatter.kt

app/src/main/java/io/legado/app/utils/HtmlFormatter.kt

@@ -17,7 +17,7 @@ object HtmlFormatter {
     private val notImgHtmlRegex = "</?(?!img)[a-zA-Z]+(?=[ >])[^<>]*>".toRegex()
     private val otherHtmlRegex = "</?[a-zA-Z]+(?=[ >])[^<>]*>".toRegex()
     private val formatImagePattern = Pattern.compile(
-        "<img[^>]* src *= *\"([^\"{>]*\\{(?:[^{}]|\\{[^}>]+\\})+\\})\"[^>]*>|<img[^>]* data-[^=>]*= *\"([^\">]*)\"[^>]*>|<img[^>]* src *= *\"([^\">]*)\"[^>]*>",
+        "<img[^>]*\\ssrc\\s*=\\s*\"([^\"{>]*\\{(?:[^{}]|\\{[^}>]+\\})+\\})\"[^>]*>|<img[^>]*\\sdata-[^=>]*=\\s*\"([^\">]*)\"[^>]*>|<img[^>]*\\ssrc\\s*=\\s*\"([^\">]*)\"[^>]*>",
         Pattern.CASE_INSENSITIVE
     )