[ci skip] Merge pull request #4986 from ka7/feature/spelling

Spelling fixes in comment blocks and docs
diff --git a/user_guide_src/source/database/queries.rst b/user_guide_src/source/database/queries.rst
index d4ffd16..f626f1e 100644
--- a/user_guide_src/source/database/queries.rst
+++ b/user_guide_src/source/database/queries.rst
@@ -165,7 +165,7 @@
 
 **$this->db->error();**
 
-If you need to get the last error that has occured, the error() method
+If you need to get the last error that has occurred, the error() method
 will return an array containing its code and message. Here's a quick
 example::