Update spring.io project urls.

This commit updates outdated projects.spring.io links to spring.io/projects.

Closes: #2319

Author: christophstrobl

README.adoc

@@ -1,9 +1,9 @@
-image:https://spring.io/badges/spring-data-redis/ga.svg[Spring Data Redis,link=https://projects.spring.io/spring-data-redis/#quick-start]
-image:https://spring.io/badges/spring-data-redis/snapshot.svg[Spring Data Redis,link=https://projects.spring.io/spring-data-redis/#quick-start]
+image:https://spring.io/badges/spring-data-redis/ga.svg[Spring Data Redis,link=https://spring.io/projects/spring-data-redis/#quick-start]
+image:https://spring.io/badges/spring-data-redis/snapshot.svg[Spring Data Redis,link=https://spring.io/projects/spring-data-redis/#quick-start]
 
 = Spring Data Redis image:https://jenkins.spring.io/buildStatus/icon?job=spring-data-redis%2Fmain&subject=Build[link=https://jenkins.spring.io/view/SpringData/job/spring-data-redis/] https://gitter.im/spring-projects/spring-data[image:https://badges.gitter.im/spring-projects/spring-data.svg[Gitter]]
 
-The primary goal of the https://projects.spring.io/spring-data/[Spring Data] project is to make it easier to build Spring-powered applications that use new data access technologies such as non-relational databases, map-reduce frameworks, and cloud based data services.
+The primary goal of the https://spring.io/projects/spring-data/[Spring Data] project is to make it easier to build Spring-powered applications that use new data access technologies such as non-relational databases, map-reduce frameworks, and cloud based data services.
 
 This modules provides integration with the https://redis.io/[Redis] store.
 

src/main/asciidoc/preface.adoc

@@ -51,7 +51,7 @@ See its https://docs.spring.io/spring-data/data-keyvalue/examples/retwisj/curren
 [[requirements]]
 == Requirements
 
-Spring Data Redis 2.x binaries require JDK level 8.0 and above and https://projects.spring.io/spring-framework/[Spring Framework] {springVersion} and above.
+Spring Data Redis 2.x binaries require JDK level 8.0 and above and https://spring.io/projects/spring-framework/[Spring Framework] {springVersion} and above.
 
 In terms of key-value stores, https://redis.io[Redis] 2.6.x or higher is required.
 Spring Data Redis is currently tested against the latest 4.0 release.

src/main/asciidoc/reference/redis-scripting.adoc

@@ -49,4 +49,4 @@ TIP: It is ideal to configure a single instance of `DefaultRedisScript` in your
 
 The `checkAndSet` method above then runs the scripts. Scripts can be run within a `SessionCallback` as part of a transaction or pipeline. See "`<<tx>>`" and "`<<pipeline>>`" for more information.
 
-The scripting support provided by Spring Data Redis also lets you schedule Redis scripts for periodic running by using the Spring Task and Scheduler abstractions. See the https://projects.spring.io/spring-framework/[Spring Framework] documentation for more details.
+The scripting support provided by Spring Data Redis also lets you schedule Redis scripts for periodic running by using the Spring Task and Scheduler abstractions. See the https://spring.io/projects/spring-framework/[Spring Framework] documentation for more details.

src/main/resources/readme.txt

@@ -1,6 +1,6 @@
 SPRING DATA REDIS $version (March 31, 2014)
 -------------------------------------------
-https://projects.spring.io/spring-data-redis/
+https://spring.io/projects/spring-data-redis/
 
 1. INTRODUCTION
 
@@ -23,6 +23,6 @@ Please see the reference documentation.
 Additionally the blog at https://spring.io/blog as well as sections of interest in the reference documentation.
 
 5. ADDITIONAL RESOURCES
-Spring Data Homepage:			https://projects.spring.io/spring-data-redis/
+Spring Data Homepage:			https://spring.io/projects/spring-data-redis/
 Spring Data on Stackoverflow:	https://stackoverflow.com/questions/tagged/spring-data
-Redis Homepage:					https://redis.io
+Redis Homepage:					https://redis.io