Add note to TLDR to remind users to configure PrivateBin, change links, add sql syntax highlighting

Installation.md

@@ -3,7 +3,8 @@
 **TL;DR:** Download the
 [latest release archive](https://github.com/PrivateBin/PrivateBin/releases/latest)
 and extract it in your web hosts folder were you want to install your PrivateBin
-instance.
+instance. Afterwards adjust the configuration. This is relevant for the security of
+your PrivateBin instance!
 
 ### Requirements
 
@@ -26,7 +27,7 @@ you set a time limit in seconds. Users may not post more often then this limit
 to your PrivateBin installation.
 
 More details can be found in the
-[configuration documentation](https://github.com/PrivateBin/PrivateBin/wiki/Configuration).
+[configuration documentation](../Configuration).
 
 ## Advanced installation
 
@@ -92,32 +93,34 @@ gain any experience running PrivateBin on other RDBMS, please let us know.
 
 For reference or if you want to create the table schema for yourself:
 
-    CREATE TABLE prefix_paste (
-        dataid CHAR(16) NOT NULL,
-        data BLOB,
-        postdate INT,
-        expiredate INT,
-        opendiscussion INT,
-        burnafterreading INT,
-        meta TEXT,
-        attachment MEDIUMBLOB,
-        attachmentname BLOB,
-        PRIMARY KEY (dataid)
-    );
-    
-    CREATE TABLE prefix_comment (
-        dataid CHAR(16),
-        pasteid CHAR(16),
-        parentid CHAR(16),
-        data BLOB,
-        nickname BLOB,
-        vizhash BLOB,
-        postdate INT,
-        PRIMARY KEY (dataid)
-    );
-    CREATE INDEX parent ON prefix_comment(pasteid);
-    
-    CREATE TABLE prefix_config (
-        id CHAR(16) NOT NULL, value TEXT, PRIMARY KEY (id)
-    );
-    INSERT INTO prefix_config VALUES('VERSION', '0.22');
+```sql
+CREATE TABLE prefix_paste (
+    dataid CHAR(16) NOT NULL,
+    data BLOB,
+    postdate INT,
+    expiredate INT,
+    opendiscussion INT,
+    burnafterreading INT,
+    meta TEXT,
+    attachment MEDIUMBLOB,
+    attachmentname BLOB,
+    PRIMARY KEY (dataid)
+);
+
+CREATE TABLE prefix_comment (
+    dataid CHAR(16),
+    pasteid CHAR(16),
+    parentid CHAR(16),
+    data BLOB,
+    nickname BLOB,
+    vizhash BLOB,
+    postdate INT,
+    PRIMARY KEY (dataid)
+);
+CREATE INDEX parent ON prefix_comment(pasteid);
+  
+CREATE TABLE prefix_config (
+    id CHAR(16) NOT NULL, value TEXT, PRIMARY KEY (id)
+);
+INSERT INTO prefix_config VALUES('VERSION', '0.22');
+```