fix typo and change, change font size, line height

Author: PhilippSalvisberg

PLSQL-and-SQL-Coding-Guidelines.pdf

@@ -16,8 +16,9 @@
                 top: 20px;
                 left: 25px;
                 color:white;
-                font-size: 66pt;
+                font-size: 77pt;
                 font-weight: bold;
+                line-height: 90%;
             }
             .page .cover-image .subtitle {
                 position: relative;
@@ -46,7 +47,7 @@
             <div class="cover-image">
                 <img src="images/cover.png" style="width: 100%;"/>
                 <div class="title">
-                    PL/SQL &amp; SQL<br/>Codinging Guidelines
+                    PL/SQL &amp; SQL<br/>Coding Guidelines
                 </div>
                 <div class="subtitle">
                     Tips for Development &amp; Operation