fix tour in Rmd

[tdhock]

Closes #183

when running new test locally, the failure I get is:

── Failure: clicking bottom plot keeps driver open ─────────────────────────────
`djs.start1.bottom.list` not identical to `expected.driver.bottom`.
Component “title”: names for current but not for target
Component “title”: Length mismatch: comparison on first 0 components
Component “description”: names for current but not for target
Component “description”: Length mismatch: comparison on first 0 components

Error:
! Test failed
Backtrace:
    ▆
 1. ├─testthat::test_that(...)
 2. │ └─withr (local) `<fn>`()
 3. └─reporter$stop_if_needed()
 4.   └─rlang::abort("Test failed", call = NULL)

[tdhock]

testing selectors in firefox inspect console

document.querySelector("#plot1bottom_q")
<svg id="plot1bottom_q" height="400" width="400">

document.querySelector("#plot1bottom_q .geom1_point_q")
<g class="geom1_point_q">

[tdhock]

GitHub actions test result:

[ FAIL 2 | WARN 0 | SKIP 0 | PASS 1148 ]

══ Failed tests ════════════════════════════════════════════════════════════════
── Failure ('test-renderer1-knit-print.R:234:3'): clicking bottom plot keeps driver open ──
`djs.start1.bottom.list` not identical to `expected.driver.bottom`.
Component “title”: names for current but not for target
Component “title”: Length mismatch: comparison on first 0 components
Component “description”: names for current but not for target
Component “description”: Length mismatch: comparison on first 0 components
── Failure ('test-renderer2-param-off.R:203:3'): rect default is black/transparent stroke ──
as.numeric(stroke.tab) not equal to c(1, 8).
2/2 mismatches (average diff: 1)
[1] 2 - 1 ==  1
[2] 7 - 8 == -1

[ FAIL 2 | WARN 0 | SKIP 0 | PASS [114](https://github.com/animint/animint2/actions/runs/12975903975/job/36187521713?pr=185#step:10:115)8 ]

first test failure is expected.
second is not.

[tdhock]

still getting that error in CI

[ FAIL 1 | WARN 0 | SKIP 0 | PASS 1149 ]

══ Failed tests ════════════════════════════════════════════════════════════════
── Failure ('test-renderer2-param-off.R:203:3'): rect default is black/transparent stroke ──
as.numeric(stroke.tab) not equal to c(1, 8).
2/2 mismatches (average diff: 1)
[1] 2 - 1 ==  1
[2] 7 - 8 == -1

[ FAIL 1 | WARN 0 | SKIP 0 | PASS [114](https://github.com/animint/animint2/actions/runs/12976155070/job/36188062917?pr=185#step:10:115)9 ]

[tdhock]

we see in the CI results above that the test passes in a file named renderer3, but not renderer1 (heisenbug), so it is important to keep different renderer numbers after all!