Update README.md

indents in citation bibtex
diff --git a/README.md b/README.md
index b250c07..38f212e 100644
--- a/README.md
+++ b/README.md
@@ -176,13 +176,13 @@
 
 ```
 @software{Kleinberg_rgpt3_Making_requests_2022,
-author = {Kleinberg, Bennett},
-doi = {10.5281/zenodo.7327667},
-month = {11},
-title = {{rgpt3: Making requests from R to the GPT-3 API}},
-url = {https://github.com/ben-aaron188/rgpt3},
-version = {0.3},
-year = {2022}
+    author = {Kleinberg, Bennett},
+    doi = {10.5281/zenodo.7327667},
+    month = {11},
+    title = {{rgpt3: Making requests from R to the GPT-3 API}},
+    url = {https://github.com/ben-aaron188/rgpt3},
+    version = {0.3},
+    year = {2022}
 }
 ```