Replace index.ros.org links -> docs.ros.org.

[clalancette]

Signed-off-by: Chris Lalancette clalancette@openrobotics.org

[codecov]

Codecov Report

Merging #94 (2394a7f) into master (04a0d43) will decrease coverage by 23.48%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master      #94       +/-   ##
===========================================
- Coverage   48.24%   24.75%   -23.49%     
===========================================
  Files        2277       27     -2250     
  Lines       62920      820    -62100     
  Branches    27935      185    -27750     
===========================================
- Hits        30353      203    -30150     
+ Misses       7954      454     -7500     
+ Partials    24613      163    -24450     

Flag	Coverage Δ
unittests	24.75% <ø> (-23.49%)	⬇️

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Impacted Files	Coverage Δ
...s_collector/collector/metric_details_interface.hpp
...ollector/collector/generate_statistics_message.cpp
...opic_statistics_collector/received_message_age.hpp
...s_collector/test/benchmark/benchmark_iterative.cpp
...ector/moving_average_statistics/moving_average.cpp
...s_collector/collector/metric_details_interface.hpp
...istics_collector/test/collector/test_collector.cpp
...ector/moving_average_statistics/moving_average.hpp
...s_collector/test/benchmark/benchmark_iterative.cpp
...s_collector/test/benchmark/benchmark_iterative.cpp
... and 2270 more

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