Fix a typo in the makefile templates

The fips.so and legacy.so providers were not being installed because of
a typo in the makefile templates.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/11615)

Configurations/unix-Makefile.tmpl

@@ -138,7 +138,7 @@ INSTALL_ENGINES={-
                                && $unified_info{attributes}->{modules}->{$_}->{engine} }
                         @{$unified_info{modules}}))
 -}
-INSTALL_MODDULES={-
+INSTALL_MODULES={-
         join(" \\\n" . ' ' x 16,
              fill_lines(" ", $COLUMNS - 16,
                         map { platform->dso($_) }

Configurations/windows-makefile.tmpl

@@ -94,7 +94,7 @@ INSTALL_ENGINEPDBS={-
                          && $unified_info{attributes}->{modules}->{$_}->{engine} }
                   @{$unified_info{modules}})
 -}
-INSTALL_MODDULES={-
+INSTALL_MODULES={-
         join(" \\\n" . ' ' x 16,
              fill_lines(" ", $COLUMNS - 16,
                         map { platform->dso($_) }