updated jpg paths to png

README.md

@@ -44,7 +44,7 @@ size_categories: 1K<n<10K # ex: n<1K, 1K<n<10K, 10K<n<100K, 100K<n<1M, ...
 --> 
 
 This dataset contains 1614 high-resolution PNG images of individual ground-beetle
-specimens (Coleoptera : Carabidae) collected by the U.S. National Ecological
+specimens across 14 different (Coleoptera : Carabidae) species collected by the U.S. National Ecological
 Observatory Network (NEON).
 
 ### Key Uses
@@ -57,7 +57,7 @@ Observatory Network (NEON).
 
 ```
 /group_images
-    IMG_<id>.jpg
+    IMG_<id>.png
     ...
 /individual_specimens
     IMG_<id>_specimen_<number>.png
@@ -69,7 +69,7 @@ README.md
 ### Data Fields
 **metadata.csv**:
 - `individualImageFilePath`: Path to the individually cropped beetle image, e.g., `individual_specimens/IMG_<id>_specimen_<number>.png`, where `<id>` matches the group image and `<number>` indicates the beetle's position within that group image.
-- `groupImageFilePath`: Path to grouped beetle images. e.g., `group_images/IMG_<id>.jpg` where `IMG_<id>` is the image name assigned by the camera roll.
+- `groupImageFilePath`: Path to grouped beetle images. e.g., `group_images/IMG_<id>.png` where `IMG_<id>` is the image name assigned by the camera roll.
 - `individualID`: Unique identification number assigned to each individual beetle. This begins with NEON_BET.D20 to show that the unique ID corresponds to a beetle from the National Ecological Observatory Network's Domain 20, followed by six digits.
 - `taxonID`: All pinned beetles in this dataset have been identified to genus and species. Here a six-letter code is given specifiying the first three letters of the genus followed by the first three letters of the specific epithet.
 - `ScientificName`: Binomial scientific name of the specimen.