t/README: correct spelling of "uncommon"

diff --git a/t/README b/t/README
index 8373a27fea38b1ec111e80d203bf61f1143b7861..56a417439c2575f616e7a9bb87177efefe9e6b52 100644 (file)
--- a/t/README
+++ b/t/README
@@ -315,6 +315,10 @@ packs on demand. This normally only happens when the object size is
 over 2GB. This variable forces the code path on any object larger than
 <n> bytes.
 
+GIT_TEST_OE_DELTA_SIZE=<n> exercises the uncommon pack-objects code
+path where deltas larger than this limit require extra memory
+allocation for bookkeeping.
+
 Naming Tests
 ------------