Fix closes Issue12621 - Fix docstrings of find and rfind methods of bytes/bytearry/unicodeobject.
diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 7a74104..0b45394 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -1102,7 +1102,7 @@
 "B.find(sub[, start[, end]]) -> int\n\
 \n\
 Return the lowest index in B where subsection sub is found,\n\
-such that sub is contained within s[start,end].  Optional\n\
+such that sub is contained within B[start,end].  Optional\n\
 arguments start and end are interpreted as in slice notation.\n\
 \n\
 Return -1 on failure.");
@@ -1172,7 +1172,7 @@
 "B.rfind(sub[, start[, end]]) -> int\n\
 \n\
 Return the highest index in B where subsection sub is found,\n\
-such that sub is contained within s[start,end].  Optional\n\
+such that sub is contained within B[start,end].  Optional\n\
 arguments start and end are interpreted as in slice notation.\n\
 \n\
 Return -1 on failure.");