merge from 3.2 - Fix closes Issue12621 - Fix docstrings of find and rfind methods of bytes/bytearry/unicodeobject.
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index b2332a5..af259a0 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -6491,7 +6491,7 @@
"S.find(sub [,start [,end]]) -> int\n\
\n\
Return the lowest index in S where substring sub is found,\n\
-such that sub is contained within s[start:end]. Optional\n\
+such that sub is contained within S[start:end]. Optional\n\
arguments start and end are interpreted as in slice notation.\n\
\n\
Return -1 on failure.");
@@ -7226,7 +7226,7 @@
"S.rfind(sub [,start [,end]]) -> int\n\
\n\
Return the highest index in S where substring sub is found,\n\
-such that sub is contained within s[start:end]. Optional\n\
+such that sub is contained within S[start:end]. Optional\n\
arguments start and end are interpreted as in slice notation.\n\
\n\
Return -1 on failure.");