Improve README.md

[vladimir-cucu]

Additional context
After translating the README.md to Romanian language, I've observed a few places in README.md that can be improved. I've listed my proposed improvements bellow.

Describe the solution you'd like to add

• There are a few chapters that don't have a page to which they should point to. For instance ## [Instructions and Program](Not-Added) would point to 404 -page not found github page. A potential solution might be removing the link entirely and maybe add a TODO e.g. ## Instructions and Program <!-- TODO: Add page and link it here -->.
• The statement There are three types of conditional statements mainly: in the loops subsection should be There are three types of loops, mainly:.
• Improve the table with algorithm time and space complexity by making the Time Complexity cell span across 3 columns and the Algorithm cell span across 2 rows. A potential solution might be to use <table> instead with colspan="3" and rowspan="2" for the respective cells.
• Regarding the same table as above: there are 2 separate tables that can potentially be combined into 1.
• When describing common time complexities, I think, for consistency reasons, the paragraph with O(n log n) should come before the paragraph with O(n*n).
• There is a typo in "Here is a simple example of a recursice function in C:". It should be "recursive" instead of "recursive".
• There is a typo in "... abstractions that are more con- convenient to use than ..." The "con-" should be removed.
• There are a few multi-line paragraphs in some sections (e.g. Types of Operating Systems) that can be written in a single line in order to make it easier for them to be translated into other languages.
• Each paragraph in the sub-chapter "Top benefits of cloud computing" could be improved e.g. change "Cost" to "Cost:".
• Each list item in the sub-chapter "Web Technology" could be improved in a similar fashion as described above.

Edit: additional potential improvents

• "Networking" and "Internet" chapter name sizes are larger than other chapter name sizes.
• Code indentation can be improved. Also, for Lisp code syntax highlighting, I think we need to use "cl" instead of "Lisp" as specified here.

[shhossain]

@vladimir-cucu you can start to work on it. and your detailed points are very much appreciated.