Update README.md

Fix types on method listing

README.md

@@ -25,13 +25,13 @@ if(posts != null)
 ```
 
 List of Methods in Wrapper:
-- `GetGelbooruImagesAsync(string[] tags)`
-- `GetDanbooruImagesAsync(string[] tags)`
-- `GetRule34ImagesAsync(string[] tags)`
-- `GetE621ImagesAsync(string[] tags)`
-- `GetKonaChanImagesAsync(string[] tags)`
-- `GetYandereImagesAsync(string[] tags)`
-- `GetRealBooruImagesAsync(string[] tags)`
+- `GetGelbooruImagesAsync(IEnumerable<string> tags)`
+- `GetDanbooruImagesAsync(IEnumerable<string> tags)`
+- `GetRule34ImagesAsync(IEnumerable<string> tags)`
+- `GetE621ImagesAsync(IEnumerable<string> tags)`
+- `GetKonaChanImagesAsync(IEnumerable<string> tags)`
+- `GetYandereImagesAsync(IEnumerable<string> tags)`
+- `GetRealBooruImagesAsync(IEnumerable<string> tags)`
 
 # Contributing
 If you wish to add more booru's to the wrapper/make the code better/optimise the code, please fork your own version and pull-request it. If you are planning on adding another booru to the wrapper, please do it in a similar style to the currently existing methods.