tools: fix ICU shrinker and docs

- tools: path to ICU datafile moved
- docs: configure is now configure.py

Fixes: #23245

PR-URL: #23266
Reviewed-By: Refael Ackermann <refack@gmail.com>

tools/icu/README.md

@@ -92,7 +92,7 @@ make clean
 tools/license-builder.sh
 ```
 
-- Now, fix the default URL for the `full-icu` build in `/configure`, in
+- Now, fix the default URL for the `full-icu` build in `/configure.py`, in
 the `configure_intl()` function. It should match the ICU URL used in the
 first step.  When this is done, the following should build with full ICU.
 
@@ -104,7 +104,7 @@ make
 make test-ci
 ```
 
-- commit the change to `configure` along with the updated `LICENSE` file.
+- commit the change to `configure.py` along with the updated `LICENSE` file.
 
   - Note: To simplify review, I often will “pre-land” this patch, meaning that
   I run the patch through `curl -L https://github.com/nodejs/node/pull/xxx.patch

tools/icu/shrink-icu-src.py

@@ -22,7 +22,7 @@
 parser.add_option('--icutmp',
     action='store',
     dest='icutmp',
-    default='out/Release/gen/icutmp',
+    default='out/Release/obj/gen/icutmp',
     help='path to icutmp dir.')