ICU-20795 add LocaleMatcher to API docs index
diff --git a/icu4c/source/common/unicode/docmain.h b/icu4c/source/common/unicode/docmain.h
index 1e959cb..704139a 100644
--- a/icu4c/source/common/unicode/docmain.h
+++ b/icu4c/source/common/unicode/docmain.h
@@ -99,7 +99,7 @@
* </tr>
* <tr>
* <td>Codepage Conversion</td>
- * <td>ucnv.h, ucnvsel.hb</td>
+ * <td>ucnv.h, ucnvsel.h</td>
* <td>C API</td>
* </tr>
* <tr>
@@ -115,7 +115,7 @@
* <tr>
* <td>Locales </td>
* <td>uloc.h</a></td>
- * <td>icu::Locale, icu::LocaleBuilder</td>
+ * <td>icu::Locale, icu::LocaleBuilder, icu::LocaleMatcher</td>
* </tr>
* <tr>
* <td>Resource Bundles</td>