docs(readme): rm duplicate wikipedia example

[alexcg1]

Max and I both added the wiki example so it got added twice! This PR:

• removes Max's entry
• expands title of my own to include "NLP" for better explanation

[codecov]

Codecov Report

Merging #1946 (b241dab) into master (3b95d78) will increase coverage by 1.94%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1946      +/-   ##
==========================================
+ Coverage   82.00%   83.95%   +1.94%     
==========================================
  Files         148      148              
  Lines        7092     7092              
==========================================
+ Hits         5816     5954     +138     
+ Misses       1276     1138     -138     

Impacted Files	Coverage Δ
jina/drivers/control.py	95.08% <0.00%> (+1.63%)	⬆️
jina/clients/base.py	80.83% <0.00%> (+1.66%)	⬆️
jina/drivers/search.py	98.14% <0.00%> (+1.85%)	⬆️
jina/peapods/runtimes/jinad/client.py	82.48% <0.00%> (+2.18%)	⬆️
jina/drivers/convert.py	93.93% <0.00%> (+3.03%)	⬆️
jina/flow/mixin/crud.py	89.28% <0.00%> (+3.57%)	⬆️
jina/peapods/runtimes/zmq/zed.py	91.42% <0.00%> (+3.57%)	⬆️
jina/peapods/runtimes/jinad/__init__.py	95.83% <0.00%> (+4.16%)	⬆️
jina/clients/helper.py	100.00% <0.00%> (+4.54%)	⬆️
jina/jaml/helper.py	93.89% <0.00%> (+6.87%)	⬆️
... and 8 more

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[github-actions]

Latency summary

Current PR yields:

• 😶 index QPS at 1115, delta to last 3 avg.: +0%
• 🐢🐢 query QPS at 18, delta to last 3 avg.: -8%

Breakdown

Version	Index QPS	Query QPS
current	1115	18
1.0.1	1130	18
1.0.0	1113	20

Backed by latency-tracking. Further commits will update this comment.

[nan-wang]

LGTM👍