DOC: Fixed typo in doc.

src/doc/Glossary.md

 # Glossary
 
+## Valid ID
+
+The ID of an existing entity. It is by definition unique among the IDs of all existing entities and is a positive integer."
+
 ## Valid Unique Existing Name
 
 A name of an exiting entity which is unique among the names of all existing entities.
@@ -8,10 +12,6 @@ A name of an exiting entity which is unique among the names of all existing enti
 
 A name of a to-be-inserted/updated entity _e_ which is unique among the names of all other entities that are to be inserted or updated along with the entity _e_.
 
-## Valid ID
-
-The ID of an existing entity. It is by definition unique among the IDs of all existing entities and is a positive integer."
-
 ## Valid Unique Temporary ID
 
 The negative integer ID of a to-be-inserted entity _e_ which is unique among the ids of all other entities that are to be inserted along with the entity _e_. 

src/doc/concepts.rst

@@ -7,7 +7,7 @@ Basic concepts of the CaosDB server
    :glob:
 
    Data Model <Data-Model>
-   Permissions
+   permissions
    roles
 
 The CaosDB server provides the HTTP API resources to users and client libraries.  It uses a plain

src/doc/Permissions.rst → src/doc/permissions.rst

-#Permissions
+Permissions
+===========
 
 CaosDB has a fine grained role based permission system. Each interaction
 with the server is governed by the current rules of the user, by default