fix typo in gunicorn settings

Author: Azulinho

run

@@ -225,7 +225,7 @@ function klines_caching_service() { # runs the klines caching service
     /cryptobot/.venv/bin/gunicorn --preload \
 			--workers=${N_CPUS} \
 			--worker-class=gthread \
-			--worker-connections=8 \
+			--threads=8 \
 			--worker-tmp-dir /dev/shm \
 			--bind 0.0.0.0:8999  klines_caching_service:app
 }
@@ -253,7 +253,7 @@ function price_log_service() { # runs the klines caching service
     /cryptobot/.venv/bin/gunicorn --preload \
 			--workers=${N_CPUS} \
 			--worker-class=gthread \
-			--worker-connections=8 \
+			--threads=8 \
 			--worker-tmp-dir /dev/shm \
 			--bind 0.0.0.0:8998  price_log_service:app
 }