spelling & grammar changes

Adjusted some typos or grammatical errors for readability.

Author: mkou-i

src/content/docs/extensions/db2i/index.mdx

@@ -156,9 +156,9 @@ We added the option for users to configure `Auto Refresh` on the SELF view. When
 
 ## Visual Explain
 
-We have added Visual Explain into the database extension with a more lightweight approach of explain data. The typically run button on the document now has options to either run, run and explain or explain without running, which will show the explain nodes and node details in the same result set view.
+We have added Visual Explain into the database extension with a more lightweight approach of explain data. The typical run button on the document now has options to either run, run and explain or explain without running, which will show the explain nodes and node details in the same result set view.
 
-The Visual Explain view has button on the header to control which nodes should be highlights, as well as the ability to export the data as JSON, and more.
+The Visual Explain view has a button on the header to control which nodes should be highlights, as well as the ability to export the data as JSON, and more.
 
 ![](./images/dove.png)
 
@@ -184,7 +184,7 @@ There are a few ways to create an IBM i Notebook:
 
 ### The life of a Notebook
 
-A notebook is made up of cells. A cell is asscociated with a language (for example, `sql`, `cl`, or `markdown`). Cells (other than `markdown`) can be executed. Each cell has a result and typically gets rendered below the cell input after execution. 
+A notebook is made up of cells. A cell is associated with a language (for example, `sql`, `cl`, or `markdown`). Cells (other than `markdown`) can be executed. Each cell has a result and typically gets rendered below the cell input after execution. 
 
 Execution is different for each language type: