Fix a few typos
diff --git a/Doc/lib/libsys.tex b/Doc/lib/libsys.tex
index 0503024..53c8c42 100644
--- a/Doc/lib/libsys.tex
+++ b/Doc/lib/libsys.tex
@@ -340,12 +340,12 @@
\versionadded{2.0}
\end{funcdesc}
-\begin{funcdesc}{sertdlopenflags}{n}
+\begin{funcdesc}{setdlopenflags}{n}
Set the flags used by the interpreter for \cfunction{dlopen()}
calls, such as when the interpreter loads extension modules. Among
other things, this will enable a lazy resolving of symbols when
- imporing a module, if called as \code{sys.setdlopenflags(0)}. To
- share symols across extension modules, call as
+ importing a module, if called as \code{sys.setdlopenflags(0)}. To
+ share symbols across extension modules, call as
\code{sys.setdlopenflags(dl.RTLD_NOW | dl.RTLD_GLOBAL)}. Symbolic
names for the flag modules can be either found in the \refmodule{dl}
module, or in the \module{DLFCN} module. If \module{DLFCN} is not