README.md: [local+parse] s/RESULT/RESULTS/g

This complements 4194d2ab
and 36ea1304.

README.md

@@ -17,7 +17,7 @@ Installation direct from the git repo:
 # To run fio locally (which launches a single client locally)
 
     make local SCENARIO=beegfs FIO_RW=randread NUM_CLIENTS=1 \
-    DATA_PATH=/path-to-test-dir RESULT_PATH=/path-to-result-dir
+    DATA_PATH=/path-to-test-dir RESULTS_PATH=/path-to-result-dir
 
 # Alternatively, to deploy multiple clients by creating k8s job
 
@@ -27,7 +27,7 @@ Installation direct from the git repo:
 
 # To generate plot:
 
-    make parse RESULT_PATH=/path-to-result-dir OUTPUT_PATH=/path-to-output-dir
+    make parse RESULTS_PATH=/path-to-result-dir OUTPUT_PATH=/path-to-output-dir
 
 # Typical output figures: