fix: better types

Author: IvanIhnatsiuk

ios/styles/ImageStyle.mm

@@ -36,7 +36,8 @@ + (BOOL)isSelfClosing {
   return YES;
 }
 
-+ (NSDictionary *)getParametersFromValue:(id)value {
++ (NSDictionary<NSString *, NSString *> *_Nullable)getParametersFromValue:
+    (id)value {
   ImageData *img = (ImageData *)value;
   if (!img)
     return nil;

ios/styles/LinkStyle.mm

@@ -37,7 +37,8 @@ + (NSAttributedStringKey)attributeKey {
   return LinkAttributeName;
 }
 
-+ (NSDictionary *)getParametersFromValue:(id)value {
++ (NSDictionary<NSString *, NSString *> *_Nullable)getParametersFromValue:
+    (id)value {
   NSString *url = value;
   if (!url)
     return nil;

ios/styles/MentionStyle.mm

@@ -36,7 +36,8 @@ + (NSAttributedStringKey)attributeKey {
   return MentionAttributeName;
 }
 
-+ (NSDictionary *)getParametersFromValue:(id)value {
++ (NSDictionary<NSString *, NSString *> *_Nullable)getParametersFromValue:
+    (id)value {
   MentionParams *mp = value;
   if (!mp)
     return nil;

ios/utils/ParameterizedStyleProtocol.h

@@ -1,5 +1,6 @@
 @protocol ParameterizedStyleProtocol <NSObject>
 
-+ (NSDictionary *_Nullable)getParametersFromValue:(id)value;
++ (NSDictionary<NSString *, NSString *> *_Nullable)getParametersFromValue:
+    (id _Nullable)value;
 
 @end