docs: fix dangling links

docs/admin/Faq.md

@@ -160,9 +160,6 @@ by everybody, e.g.
 
 Try `chmod a+r nominatim.so; chmod a+x nominatim.so`.
 
-When running SELinux, make sure that the
-[context is set up correctly](../appendix/Install-on-Centos-8.md#adding-selinux-security-settings).
-
 When you recently updated your operating system, updated PostgreSQL to
 a new version or moved files (e.g. the build directory) you should
 recreate `nominatim.so`. Try

docs/develop/Indexing.md

@@ -78,7 +78,7 @@ The inheritance is computed in the data preparation step.
 The prepared place information is handed to the tokenizer next. This is a
 Python module responsible for processing the names  from both name and address
 terms and building up the word index from them. The process is explained in
-more detail in the [Tokenizer chapter](Tokenizer.md).
+more detail in the [Tokenizer chapter](Tokenizers.md).
 
 ### Address processing