doc: add links to Postgres features intro

Reported-by: Elena Indrupskaya
Discussion: https://postgr.es/m/1a666b2e-d373-1c94-1005-1700e023670d@postgrespro.ru

Backpatch-through: master

diff --git a/doc/src/sgml/intro.sgml b/doc/src/sgml/intro.sgml
index 63eda059f0c9daf52b2ccd5cc4aa23952fa350bb..fec72481b54c732d6faef26a1b5b647cd895b944 100644 (file)
--- a/doc/src/sgml/intro.sgml
+++ b/doc/src/sgml/intro.sgml
@@ -101,22 +101,22 @@
 
    
     
-     complex queries
+     complex queries
     
     
-     foreign keys
+     foreign keys
     
     
-     triggers
+     triggers
     
     
-     updatable views
+     updatable views
     
     
-     transactional integrity
+     transactional integrity
     
     
-     multiversion concurrency control
+     multiversion concurrency control
     
    
 
@@ -125,22 +125,22 @@
 
    
     
-     data types
+     data types
     
     
-     functions
+     functions
     
     
-     operators
+     operators
     
     
-     aggregate functions
+     aggregate functions
     
     
-     index methods
+     index methods
     
     
-     procedural languages
+     procedural languages