[docs] Fix all 404s.

Change-Id: I1b89db473582f9fcc4d87436a590ee36e869fe45
No-Try: true
Docs-Preview: https://skia.org/docs/user/build?cl=392717
Docs-Preview: https://skia.org/docs/dev/contrib/?cl=392717
Docs-Preview: https://skia.org/docs/dev/gardening/?cl=392717
Docs-Preview: https://skia.org/docs/user/tips?cl=392717
Docs-Preview: https://skia.org/docs/dev/tools/debugger?cl=392717
Docs-Preview: https://skia.org/docs/user/modules/pathkit?cl=392717
Docs-Preview: https://skia.org/docs/dev/testing/fuzz?cl=392717
Docs-Preview: https://skia.org/docs/dev/testing/ios?cl=392717
Docs-Preview: https://skia.org/docs/roles?cl=392717
Docs-Preview: https://skia.org/docs/user/api/?cl=392717
Docs-Preview: https://skia.org/docs/dev/testing/swarmingbots?cl=392717
Docs-Preview: https://skia.org/docs/dev/chrome/changes?cl=392717
Docs-Preview: https://skia.org/docs/user/download?cl=392717
Docs-Preview: https://skia.org/docs/dev/flutter/?cl=392717
Docs-Preview: https://skia.org/docs/user/modules/quickstart?cl=392717
Docs-Preview: https://skia.org/docs/user/api/skcanvas_creation?cl=392717
Docs-Preview: https://skia.org/docs/user/sample/viewer?cl=392717
Docs-Preview: https://skia.org/docs/dev/design/pdftheory?cl=392717
Docs-Preview: https://skia.org/docs/user/api/SkBlendMode_Overview?cl=392717
Docs-Preview: https://skia.org/docs/user/api/skcanvas_overview?cl=392717
Docs-Preview: https://skia.org/docs/?cl=392717
Docs-Preview: https://skia.org/docs/dev/contrib/submit?cl=392717
Docs-Preview: https://skia.org/docs/user/api/SkPath_Overview?cl=392717
Docs-Preview: https://skia.org/docs/user/modules/skottie?cl=392717
Docs-Preview: https://skia.org/docs/user/modules/canvaskit?cl=392717
Fixed: skia:404
Docs-Preview: https://skia.org/docs/dev/tools/calendar?cl=392717
Docs-Preview: https://skia.org/docs/dev/gardening/android?cl=392717
Docs-Preview: https://skia.org/docs/dev/contrib/style?cl=392717
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/392717
Reviewed-by: Heather Miller <hcm@google.com>
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
diff --git a/site/docs/dev/tools/debugger.md b/site/docs/dev/tools/debugger.md
index ced5345..d694376 100644
--- a/site/docs/dev/tools/debugger.md
+++ b/site/docs/dev/tools/debugger.md
@@ -26,8 +26,8 @@
 
 SKP files can contain a single frame or multiple frames. Single frame files have
 the .skp extension and Multi-frame files have the .mskp extension. In the online
-debugger linked above, Open a [sample mskp file](/dev/tools/calendar.mskp) or
-capture one from an android device using the
+debugger linked above, Open a [sample mskp file](/docs/dev/tools/calendar.mskp)
+or capture one from an android device using the
 [instructions here](https://sites.google.com/a/google.com/skia/android/skp-from-framework).
 
 ### Command Playback and Filters
@@ -177,7 +177,7 @@
 ## Building and running locally
 
 Begin by following the instructions to
-[download and build Skia](../../user/quick), then simply build and run the
+[download and build Skia](/docs/user/build), then simply build and run the
 `skiaserve` tool:
 
 <!--?prettify lang=sh?-->