[ios, macos] Note corresponding style spec properties

Documentation for attributes whose names we’ve overridden now mention the original style specification property name, with a link to the style specification documentation for the property.

platform/darwin/src/MGLLineStyleLayer.h

@@ -141,6 +141,8 @@ typedef NS_ENUM(NSUInteger, MGLLineTranslateAnchor) {
  This property is measured in line widths.
 
  This property is only applied to the style if `linePattern` is set to `nil`. Otherwise, it is ignored.
+ 
+ This attribute corresponds to the <a href="https://www.mapbox.com/mapbox-gl-style-spec/#paint-line-dasharray"><code>line-dasharray</code></a> paint property in the Mapbox Style Specification.
  */
 @property (nonatomic, null_resettable) MGLStyleValue<NSArray<NSNumber *> *> *lineDashPattern;
 

platform/darwin/src/MGLRasterStyleLayer.h

@@ -20,6 +20,8 @@ NS_ASSUME_NONNULL_BEGIN
  Increase or reduce the brightness of the image. The value is the maximum brightness.
  
  The default value of this property is an `MGLStyleValue` object containing an `NSNumber` object containing the float `1`. Set this property to `nil` to reset it to the default value.
+ 
+ This attribute corresponds to the <a href="https://www.mapbox.com/mapbox-gl-style-spec/#paint-raster-brightness-max"><code>raster-brightness-max</code></a> paint property in the Mapbox Style Specification.
  */
 @property (nonatomic, null_resettable) MGLStyleValue<NSNumber *> *maximumRasterBrightness;
 
@@ -27,6 +29,8 @@ NS_ASSUME_NONNULL_BEGIN
  Increase or reduce the brightness of the image. The value is the minimum brightness.
  
  The default value of this property is an `MGLStyleValue` object containing an `NSNumber` object containing the float `0`. Set this property to `nil` to reset it to the default value.
+ 
+ This attribute corresponds to the <a href="https://www.mapbox.com/mapbox-gl-style-spec/#paint-raster-brightness-min"><code>raster-brightness-min</code></a> paint property in the Mapbox Style Specification.
  */
 @property (nonatomic, null_resettable) MGLStyleValue<NSNumber *> *minimumRasterBrightness;
 

platform/darwin/src/MGLStyleLayer.h.ejs

@@ -90,6 +90,10 @@ typedef NS_ENUM(NSUInteger, MGL<%- camelize(property.name) %>) {
 <% } if (property.requires) { -%>
  
  <%- propertyReqs(property, layoutPropertiesByName, type) %>
+<% } -%>
+<% if (property.original) { -%>
+ 
+ This attribute corresponds to the <a href="https://www.mapbox.com/mapbox-gl-style-spec/#layout-<%- type -%>-<%- property.original -%>"><code><%- property.original -%></code></a> layout property in the Mapbox Style Specification.
 <% } -%>
  */
 @property (nonatomic<% if (!property.required) { %>, null_resettable<% } %>) MGLStyleValue<<%- propertyType(property, true) %>> *<%- camelizeWithLeadingLowercase(property.name) %>;
@@ -108,6 +112,10 @@ typedef NS_ENUM(NSUInteger, MGL<%- camelize(property.name) %>) {
 <% } if (property.requires) { -%>
 
  <%- propertyReqs(property, paintPropertiesByName, type) %>
+<% } -%>
+<% if (property.original) { -%>
+ 
+ This attribute corresponds to the <a href="https://www.mapbox.com/mapbox-gl-style-spec/#paint-<%- property.original -%>"><code><%- property.original -%></code></a> paint property in the Mapbox Style Specification.
 <% } -%>
  */
 @property (nonatomic<% if (!property.required) { %>, null_resettable<% } %>) MGLStyleValue<<%- propertyType(property, true) %>> *<%- camelizeWithLeadingLowercase(property.name) %>;

platform/darwin/src/MGLSymbolStyleLayer.h

@@ -252,6 +252,8 @@ typedef NS_ENUM(NSUInteger, MGLTextTranslateAnchor) {
 
 /**
  A string with {tokens} replaced, referencing the data property to pull from.
+ 
+ This attribute corresponds to the <a href="https://www.mapbox.com/mapbox-gl-style-spec/#layout-symbol-icon-image"><code>icon-image</code></a> layout property in the Mapbox Style Specification.
  */
 @property (nonatomic, null_resettable) MGLStyleValue<NSString *> *iconImageName;
 
@@ -319,6 +321,8 @@ typedef NS_ENUM(NSUInteger, MGLTextTranslateAnchor) {
  The default value of this property is an `MGLStyleValue` object containing an `NSNumber` object containing the float `1`. Set this property to `nil` to reset it to the default value.
  
  This property is only applied to the style if `iconImage` is non-`nil`. Otherwise, it is ignored.
+ 
+ This attribute corresponds to the <a href="https://www.mapbox.com/mapbox-gl-style-spec/#layout-symbol-icon-size"><code>icon-size</code></a> layout property in the Mapbox Style Specification.
  */
 @property (nonatomic, null_resettable) MGLStyleValue<NSNumber *> *iconScale;