fix #366: put a gap between table heading and table content

[subhamkumarr]

Issue link: #366

Description:

There is a single line gap between the table heading and table content everywhere. But in table 4.11 there is no gap.
To fix this, I Put a gap between the table heading and table content in Table 4.11

Screenshots:

Before:

After:

✅️ By submitting this PR, I have verified the following

• Checked to see if a similar PR has already been opened 🤔️
• Reviewed the contributing guidelines 🔍️
• Sample preview link added (add a link from the checks tab after checks complete)
• Tried Squashing the commits into one

[subhamkumarr]

@tanmoysrt Sir could you please review this PR