Improve jsDoc and some naming

src/ol/render/canvas/Immediate.js

@@ -946,7 +946,8 @@ class CanvasImmediateRenderer extends VectorContext {
     const textAlign = textState.textAlign
       ? textState.textAlign
       : defaultTextAlign;
-    // Ignore justification here, since rich-text and also `'\n'` make less sense for line placement.
+    // Ignore `textState.justify` here,
+    // since rich-text is not supported for the immediate rendering API.
     if (!contextTextState) {
       context.font = textState.font;
       context.textAlign = /** @type {CanvasTextAlign} */ (textAlign);

src/ol/render/canvas/TextBuilder.js

@@ -211,7 +211,8 @@ class CanvasTextBuilder extends CanvasBuilder {
       }
       this.beginGeometry(geometry, feature);
       const textAlign = textState.textAlign;
-      // Ignore justification here, since rich-text and also `'\n'` make less sense for line placement.
+      // Ignore `textState.justify` here,
+      // since rich-text and also `'\n'` make less sense for line placement.
       let flatOffset = 0;
       let flatEnd;
       for (let o = 0, oo = ends.length; o < oo; ++o) {