PI-2375: Fixed sed command

Author: pmcphee77

Dockerfile.setup-prisoner-search

@@ -3,7 +3,7 @@ FROM node:current-alpine3.17
 RUN apk update && apk add bash curl --no-cache
 
 RUN curl https://prisoner-search-dev.prison.service.justice.gov.uk/v3/api-docs > prisoner-offender-search.json && \
-    sed -i "s+\*/\*+application/json+g" prisoner-offender-search.json && \
+    sed -i 's/\*\/\*/application\/json/g' prisoner-offender-search.json && \
     npm install -g @stoplight/prism-cli
 
 RUN adduser -D user