Update documentation to prevent markdown rendering of underscores as italics.

[suyashdamle]

[Minor Update] First contribution. Updating documentation

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.01% ⚠️

Comparison is base (6e38a27) 97.60% compared to head (dd7c7b2) 97.60%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6255      +/-   ##
==========================================
- Coverage   97.60%   97.60%   -0.01%     
==========================================
  Files        1116     1116              
  Lines       95772    95772              
==========================================
- Hits        93481    93480       -1     
- Misses       2291     2292       +1     

Files Changed	Coverage Δ
cirq-core/cirq/protocols/json_serialization.py	97.68% <ø> (ø)

... and 1 file with indirect coverage changes

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[CirqBot]

Automerge cancelled: A status check is failing.

[vtomole]

@pavoljuhas Why is codecov/project failing? This PR doesn't touch any source code.

[pavoljuhas]

@pavoljuhas Why is codecov/project failing? This PR doesn't touch any source code.

Some test code may skip an if-branch depending on the RNG seed.
This seems to be happening in cirq-core/cirq/vis/heatmap_test.py and should hopefully go away after #6256.

Otherwise, codecov probably has some configuration value to ignore tiny coverage deltas, I will look into that if complaints keep on coming.