Rename userHTML to useHTML in AATitle and update usage

Renamed the AATitle property and method from 'userHTML' to 'useHTML' for consistency. Updated AAXAxis to use the new 'useHTML' property when converting AATitle to AAAxisTitle.

Author: AAChartModel

charts/src/main/java/com/github/aachartmodel/aainfographics/aaoptionsmodel/AATitle.kt

@@ -18,7 +18,7 @@ class AATitle {
     var verticalAlign: String? = null
     var x: Number? = null
     var y: Number? = null
-    var userHTML: Boolean? = null
+    var useHTML: Boolean? = null
 
     fun text(prop: String?): AATitle {
         text = prop
@@ -50,8 +50,8 @@ class AATitle {
         return this
     }
 
-    fun userHTML(prop: Boolean?): AATitle {
-        userHTML = prop
+    fun useHTML(prop: Boolean?): AATitle {
+        useHTML = prop
         return this
     }
 }

charts/src/main/java/com/github/aachartmodel/aainfographics/aaoptionsmodel/AAXAxis.kt

@@ -36,18 +36,13 @@ open class AAXAxis: AAAxis() {
     @Deprecated("Use `fun title(prop: AAAxisTitle): AAXAxis` instead. AATitle is deprecated for axis titles.")
     fun title(prop: AATitle?): AAXAxis {
         if (prop != null) {
-            // 将AATitle转换为AAAxisTitle
+            // 将 AATitle 转换为 AAAxisTitle
             val axisTitle = AAAxisTitle()
                 .text(prop.text)
                 .style(prop.style)
-
-            // 如果AATitle有x和y属性, 也将它们设置到AAAxisTitle中
-            prop.x?.let { x ->
-                axisTitle.x(x)
-            }
-            prop.y?.let { y ->
-                axisTitle.y(y)
-            }
+                .x(prop.x)
+                .y(prop.y)
+                .useHTML(prop.useHTML)
 
             title = axisTitle
         } else {