learn(frame-graphs): update the ways to view flame graphs (#8555)

* learn(frame-graphs): update the ways to view flame graphs

Updated instructions for generating and visualizing flame graphs, including browser preview and local setup options.

Signed-off-by: Sebastian Beltran <bjohansebas@gmail.com>

* Update apps/site/pages/en/learn/diagnostics/flame-graphs.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Sebastian Beltran <bjohansebas@gmail.com>

* fixup!

---------

Signed-off-by: Sebastian Beltran <bjohansebas@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: bjohansebas

apps/site/pages/en/learn/diagnostics/flame-graphs.md

@@ -40,12 +40,16 @@ perf record -e cycles:u -g -- node --perf-basic-prof --interpreted-frames-native
 
 4. Disregard warnings unless they're saying you can't run perf due to missing packages; you may get some warnings about not being able to access kernel module samples which you're not after anyway.
 5. Run `perf script > perfs.out` to generate the data file you'll visualize in a moment. It's useful to [apply some cleanup](#filtering-out-nodejs-internal-functions) for a more readable graph
-6. Clone Brendan Gregg's FlameGraph tools: https://github.com/brendangregg/FlameGraph
-7. Run `cat perfs.out | ./FlameGraph/stackcollapse-perf.pl | ./FlameGraph/flamegraph.pl --colors=js > profile.svg`
+6. Preview or generate the flame graph:
+   - Browser preview (no local setup required):
+     - Upload the generated `perfs.out` file to <https://flamegraph.com> to visualize the flame graph.
 
-Now open the flame graph file in your favorite browser and watch it burn. It's color-coded so you can focus on the most saturated orange bars first. They're likely to represent CPU heavy functions.
+   - Clone Brendan Gregg's FlameGraph tools: https://github.com/brendangregg/FlameGraph
+     - Run `cat perfs.out | ./FlameGraph/stackcollapse-perf.pl | ./FlameGraph/flamegraph.pl --colors=js > profile.svg` and now open the flame graph file in your favorite browser and watch it burn
 
-Worth mentioning - if you click an element of a flame graph a it will zoom-in on the section you clicked.
+Once the flame graph is rendered, inspect the most saturated orange bars first. They're likely to represent CPU heavy functions.
+
+Worth mentioning - if you click an element of a flame graph it will zoom-in on the section you clicked.
 
 ### Using `perf` to sample a running process