Fix/clarify doc examples for string *strip() methods

RELNOTES: None
PiperOrigin-RevId: 152686923

src/main/java/com/google/devtools/build/lib/syntax/MethodLibrary.java

diff --git a/src/main/java/com/google/devtools/build/lib/syntax/MethodLibrary.java b/src/main/java/com/google/devtools/build/lib/syntax/MethodLibrary.java
index 3dd3fcd..e9bbe5d 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/MethodLibrary.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/MethodLibrary.java
@@ -183,7 +183,7 @@
         "Returns a copy of the string where trailing characters that appear in <code>chars</code>"
             + "are removed."
             + "<pre class=\"language-python\">"
-            + "\"abcba\".rstrip(\"ba\") == \"abc\""
+            + "\"abcbaa\".rstrip(\"ab\") == \"abc\""
             + "</pre>",
     parameters = {
       @Param(name = "self", type = String.class, doc = "This string."),
@@ -212,7 +212,7 @@
         "Returns a copy of the string where trailing characters that appear in <code>chars</code>"
             + "are removed."
             + "<pre class=\"language-python\">"
-            + "\"abcba\".strip(\"ba\") == \"abc\""
+            + "\"aabcbcbaa\".strip(\"ab\") == \"cbc\""
             + "</pre>",
     parameters = {
       @Param(name = "self", type = String.class, doc = "This string."),