fix: wrap.info for polywrap python plugin

implementations/plugin-python/polywrap.deploy.yaml

@@ -12,7 +12,7 @@ jobs:
         package: http
         uri: $$ipfs_deploy
         config:
-          postUrl: https://wraps.wrapscan.io/r/polywrap/plugin-python-abi-bindgen@1.0.0
+          postUrl: https://wraps.wrapscan.io/r/polywrap/plugin-python-abi-bindgen@1.0.1
           headers:
             - name: Authorization
               value: $POLYWRAP_WRAPSCAN_AUTH_HEADER_PROD

implementations/plugin-python/src/__tests__/cases/000-sanity/input.graphql

@@ -62,6 +62,10 @@ type Module @imports(
     mapOfArrOfObj: Map! @annotate(type: "Map<String!, [AnotherType!]!>!")
   ): Int!
 
+  """
+  objectMethod docstring
+  is multiline.
+  """ 
   objectMethod(
     object: AnotherType!
     optObject: AnotherType

implementations/plugin-python/src/__tests__/cases/000-sanity/output/wrap_info.py

@@ -1193,6 +1193,7 @@
             "type": "[AnotherType]"
           }
         ],
+        "comment": "objectMethod docstring\\nis multiline.",
         "env": {
           "required": true
         },

implementations/plugin-python/src/helpers/pretty.rs

@@ -2,5 +2,8 @@ use handlebars::handlebars_helper;
 use serde_json::{Value};
 
 handlebars_helper!(pretty: |value: Value| {
-    serde_json::to_string_pretty(&value).unwrap()
+    let json_str = serde_json::to_string(&value).unwrap();
+    let escaped_json_str = json_str.replace("\\n", "\\\\n"); // escape backslashes
+    let escaped_val = serde_json::from_str::<Value>(&escaped_json_str).unwrap();
+    serde_json::to_string_pretty(&escaped_val).unwrap()
 });