add missing -P option to 'got cat' usage in got.1
diff --git a/got/got.1 b/got/got.1
index e4ba153..8ff5e09 100644
--- a/got/got.1
+++ b/got/got.1
@@ -1151,7 +1151,7 @@ file instead of prompting interactively.
.It Cm ug
Short alias for
.Cm unstage .
-.It Cm cat Oo Fl c Ar commit Oc Oo Fl r Ar repository-path Oc Ar arg ...
+.It Cm cat Oo Fl c Ar commit Oc Oo Fl r Ar repository-path Oc Oo Fl P Oc Ar arg ...
Parse and print contents of objects to standard output in a line-based
text format.
Content of commit, tree, and tag objects is printed in a way similar