Add versionadded. Remove duplicate "to"

6fbf0121 · Neal Norwitz · 173240d6 · 6fbf0121
Commit 6fbf0121 authored Jul 09, 2003 by Neal Norwitz
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Doc/lib/libthread.tex Doc/lib/libthread.tex +2 -1

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--- a/Doc/lib/libthread.tex
+++ b/Doc/lib/libthread.tex
@@ -45,7 +45,8 @@ then the thread exits (but other threads continue to run).

 \begin{funcdesc}{interrupt_main}{}
 Raise a KeyboardInterrupt in the main thread.  A subthread can use this
-function to to interrupt the main thread.
+function to interrupt the main thread.
+\versionadded{2.3}
 \end{funcdesc}

 \begin{funcdesc}{exit}{}