Examples and fix on errors online based in httr

[dieghernan]

See #69

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (872373d) 97.43% compared to head (c92a8b9) 97.36%. Report is 1 commits behind head on main.

:exclamation: Current head c92a8b9 differs from pull request most recent head 0496bbc. Consider uploading reports for the commit 0496bbc to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #70 +/- ## ========================================== - Coverage 97.43% 97.36% -0.08% ========================================== Files 17 17 Lines 859 873 +14 ========================================== + Hits 837 850 +13 - Misses 22 23 +1 ``` | [Files](https://app.codecov.io/gh/rOpenGov/giscoR/pull/70?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rOpenGov) | Coverage Δ | | |---|---|---| | [R/gisco\_get\_airports.R](https://app.codecov.io/gh/rOpenGov/giscoR/pull/70?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rOpenGov#diff-Ui9naXNjb19nZXRfYWlycG9ydHMuUg==) | `100.00% <ø> (ø)` | | | [R/gisco\_get\_healthcare.R](https://app.codecov.io/gh/rOpenGov/giscoR/pull/70?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rOpenGov#diff-Ui9naXNjb19nZXRfaGVhbHRoY2FyZS5S) | `94.44% <100.00%> (-5.56%)` | :arrow_down: | | [R/utils\_downloads.R](https://app.codecov.io/gh/rOpenGov/giscoR/pull/70?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rOpenGov#diff-Ui91dGlsc19kb3dubG9hZHMuUg==) | `97.20% <100.00%> (+0.16%)` | :arrow_up: |

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