- fix nullable issue

Author: mikepenz

multiplatform-markdown-renderer/src/commonMain/kotlin/com/mikepenz/markdown/compose/elements/material/TextWrapper.kt

@@ -30,7 +30,7 @@ internal fun MarkdownBasicText(
     fontFamily: FontFamily? = null,
     letterSpacing: TextUnit = TextUnit.Unspecified,
     textDecoration: TextDecoration? = null,
-    textAlign: TextAlign? = null,
+    textAlign: TextAlign = TextAlign.Unspecified,
     lineHeight: TextUnit = TextUnit.Unspecified,
     overflow: TextOverflow = TextOverflow.Clip,
     softWrap: Boolean = true,
@@ -81,7 +81,7 @@ internal fun MarkdownBasicText(
     fontFamily: FontFamily? = null,
     letterSpacing: TextUnit = TextUnit.Unspecified,
     textDecoration: TextDecoration? = null,
-    textAlign: TextAlign? = null,
+    textAlign: TextAlign = TextAlign.Unspecified,
     lineHeight: TextUnit = TextUnit.Unspecified,
     overflow: TextOverflow = TextOverflow.Clip,
     softWrap: Boolean = true,