Fix unbalanced parethesis.

Doc/lib/libdis.tex

@@ -511,7 +511,7 @@ ignored and set to zero by the compiler.
 \end{opcodedesc}
 
 \begin{opcodedesc}{LOAD_ATTR}{namei}
-Replaces TOS with \code{getattr(TOS, co_names[\var{namei}]}.
+Replaces TOS with \code{getattr(TOS, co_names[\var{namei}])}.
 \end{opcodedesc}
 
 \begin{opcodedesc}{COMPARE_OP}{opname}

Doc/lib/libexcs.tex

@@ -189,7 +189,7 @@ Raised when an \keyword{assert} statement fails.
   interrupts is made regularly.
 % XXXJH xrefs here
   Interrupts typed when a built-in function \function{input()} or
-  \function{raw_input()}) is waiting for input also raise this
+  \function{raw_input()} is waiting for input also raise this
   exception.
 \end{excdesc}