Fix broken links that should point to platforms-and-toolchains.html.

PiperOrigin-RevId: 607262168
Change-Id: I1a384ace5fc7c9e848913d2258e51b50b4366bf3

src/main/java/com/google/devtools/build/docgen/templates/attributes/common/exec_compatible_with.html

@@ -4,7 +4,7 @@
 
 <p>
 A list of
-<code><a href="platforms-and-toolchains#constraint_value">constraint_values</a></code>
+<code><a href="platforms-and-toolchains.html#constraint_value">constraint_values</a></code>
 that must be present in the execution platform for this target. This is in
 addition to any constraints already set by the rule type. Constraints are used
 to restrict the list of available execution platforms. For more details, see

src/main/java/com/google/devtools/build/docgen/templates/attributes/common/exec_properties.html

@@ -1,5 +1,5 @@
 <p>Dictionary of strings; default is <code>{}</code></p>
 
-<p> A dictionary of strings that will be added to the <code>exec_properties</code> of a platform selected for this target. See <code>exec_properties</code> of the <a href="platform.html">platform</a> rule.</p>
+<p> A dictionary of strings that will be added to the <code>exec_properties</code> of a platform selected for this target. See <code>exec_properties</code> of the <a href="platforms-and-toolchains.html#platform">platform</a> rule.</p>
 
 <p>If a key is present in both the platform and target-level properties, the value will be taken from the target.</p>

src/main/java/com/google/devtools/build/docgen/templates/attributes/common/target_compatible_with.html

@@ -4,7 +4,7 @@
 
 <p>
 A list of
-<code><a href="platforms-and-toolchains#constraint_value">constraint_value</a></code>s
+<code><a href="platforms-and-toolchains.html#constraint_value">constraint_value</a></code>s
 that must be present in the target platform for this target to be considered
 <em>compatible</em>. This is in addition to any constraints already set by the
 rule type. If the target platform does not satisfy all listed constraints then

src/main/java/com/google/devtools/build/docgen/templates/be/functions.vm

@@ -687,7 +687,7 @@ sh_binary(
   configuration conditions to matching values. Each condition is a label
   reference to
   a <code><a href="general.html#config_setting">config_setting</a></code> or
-  <code><a href="platforms-and-toolchains#constraint_value">constraint_value</a></code>,
+  <code><a href="platforms-and-toolchains.html#constraint_value">constraint_value</a></code>,
   which "matches" if the target's configuration matches an expected set of
   values. The value of <code>mytarget#srcs</code> then becomes whichever
   label list matches the current invocation.