Update revision histories for PR #31 review fixes

Author: mwunderl

tuts/090-amazon-comprehend-gs/REVISION-HISTORY.md

@@ -6,3 +6,7 @@
 - Type: functional
 - Initial version
 
+
+### 2026-04-22 v2 PR review fixes
+- Type: functional
+- Replaced placeholder example text with realistic AWS-related sentence

tuts/103-amazon-textract-gs/REVISION-HISTORY.md

@@ -6,3 +6,9 @@
 - Type: functional
 - Initial version
 
+
+### 2026-04-22 v2 PR review fixes
+- Type: functional
+- Restructured tutorial: local file method first, S3 as secondary
+- Script checks for prereq bucket stack before creating one
+- Uses repo sample image instead of generating one

tuts/105-amazon-rekognition-gs/REVISION-HISTORY.md

@@ -6,3 +6,8 @@
 - Type: functional
 - Initial version
 
+
+### 2026-04-22 v2 PR review fixes
+- Type: functional
+- Uses repo sample image instead of Python-generated image
+- Removed Python 3 prerequisite