docs(loader): update references to reflect component use (#11535)

**Related Issue:** #11518

## Summary
Updates `loader`'s properties and css variables descriptions to reflect
the updated use.

packages/calcite-components/src/components/loader/loader.scss

@@ -3,15 +3,15 @@
  *
  * These properties can be overridden using the component's tag as selector.
  *
- * @prop --calcite-loader-font-size: Specifies the font size of the loading percentage when type is `"determinate"`.
- * @prop --calcite-loader-size: Specifies the width and height of the component when not set to inline.
+ * @prop --calcite-loader-font-size: When `type` is not `"indeterminate"` or `inline`, specifies the font size of the loading percentage.
+ * @prop --calcite-loader-size: When `inline` is not set, specifies the component's width and height.
  * @prop --calcite-loader-size-inline: [Deprecated] Use `--calcite-loader-size`. Specifies the width and height of the component when set to inline.
  * @prop --calcite-loader-spacing: Specifies the the component's padding.
- * @prop --calcite-loader-progress-color-inline: Specifies the width and height of the component when set to inline.
- * @prop --calcite-loader-text-spacing: Specifies the component's text margin.
- * @prop --calcite-loader-text-weight: Specifies the component's font weight.
- * @prop --calcite-loader-text-color: Specifies the component's text color.
- * @prop --calcite-loader-progress-color: Specifies the component's progress ring color.
+ * @prop --calcite-loader-progress-color-inline: When `inline`, specifies the component's progress ring color.
+ * @prop --calcite-loader-text-spacing: When not `inline`, specifies the component's `text` margin.
+ * @prop --calcite-loader-text-weight: When not `inline` and `text` is provided, specifies the component's `text` font weight.
+ * @prop --calcite-loader-text-color: When not `inline` and `text` is provided, specifies the component's `text` color.
+ * @prop --calcite-loader-progress-color: When not `inline`, specifies the component's progress ring color.
  * @prop --calcite-loader-track-color: Specifies the component's track color.
  */
 

packages/calcite-components/src/components/loader/loader.tsx

@@ -37,7 +37,7 @@ export class Loader extends LitElement {
    */
   @property({ reflect: true }) complete = false;
 
-  /** When `true`, displays smaller and appears to the left of the text. */
+  /** When `true`, the component displays smaller. */
   @property({ reflect: true }) inline = false;
 
   /**
@@ -50,7 +50,7 @@ export class Loader extends LitElement {
   /** Specifies the size of the component. */
   @property({ reflect: true }) scale: Scale = "m";
 
-  /** Text that displays under the component's indicator. */
+  /** When not `inline`, displays text under the component's indicator. */
   @property() text = "";
 
   /**